Package Installation

I am using Codesleeve/laravel-stapler package for image uploading but I am having trouble setting it up. When I run this:

composer require codesleeve/laravel-stapler:1.0.*

I get this error

./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - codesleeve/stapler v1.0.0-Beta4 requires illuminate/foundation ~4 -> satisfiable by laravel/framework[4.0.x-dev, 4.1.x-dev, 4.2.x-dev], illuminate/foundation[4.0.x-dev].
    - codesleeve/stapler v1.0.0-Beta3 requires illuminate/foundation 4.0.x -> satisfiable by laravel/framework[4.0.x-dev], illuminate/foundation[4.0.x-dev].
    - codesleeve/stapler v1.0.0-Beta2 requires illuminate/foundation 4.0.x -> satisfiable by laravel/framework[4.0.x-dev], illuminate/foundation[4.0.x-dev].
    - codesleeve/stapler v1.0.0-Beta1 requires illuminate/foundation 4.0.x -> satisfiable by laravel/framework[4.0.x-dev], illuminate/foundation[4.0.x-dev].
    - illuminate/foundation 4.0.x-dev requires illuminate/exception dev-master -> satisfiable by illuminate/exception[dev-master].
    - codesleeve/laravel-stapler v1.0.0 requires laravel/framework ~4 -> satisfiable by laravel/framework[4.0.x-dev, 4.1.x-dev, 4.2.x-dev].
    - codesleeve/laravel-stapler v1.0.01 requires laravel/framework ~4 -> satisfiable by laravel/framework[4.0.x-dev, 4.1.x-dev, 4.2.x-dev].
    - illuminate/exception dev-master requires filp/whoops 1.1.* -> satisfiable by filp/whoops[1.1.0, 1.1.0-rc, 1.1.1, 1.1.10, 1.1.2, 1.1.3, 1.1.4, 1.1.5, 1.1.6, 1.1.7, 1.1.8, 1.1.9] but these conflict with your requirements or minimum-stability.
    - laravel/framework 4.2.x-dev requires filp/whoops 1.1.* -> satisfiable by filp/whoops[1.1.0, 1.1.0-rc, 1.1.1, 1.1.10, 1.1.2, 1.1.3, 1.1.4, 1.1.5, 1.1.6, 1.1.7, 1.1.8, 1.1.9] but these conflict with your requirements or minimum-stability.
    - laravel/framework 4.1.x-dev requires filp/whoops 1.0.10 -> satisfiable by filp/whoops[1.0.10] but these conflict with your requirements or minimum-stability.
    - laravel/framework 4.0.x-dev requires filp/whoops 1.0.7 -> satisfiable by filp/whoops[1.0.7] but these conflict with your requirements or minimum-stability.
    - codesleeve/laravel-stapler v1.0.07 requires codesleeve/stapler 1.2.* -> satisfiable by codesleeve/stapler[v1.2.0].
    - codesleeve/laravel-stapler v1.0.08 requires codesleeve/stapler 1.2.* -> satisfiable by codesleeve/stapler[v1.2.0].
    - codesleeve/laravel-stapler v1.0.09 requires codesleeve/stapler 1.2.* -> satisfiable by codesleeve/stapler[v1.2.0].
    - Conclusion: don't install codesleeve/stapler v1.2.0
    - Conclusion: don't install codesleeve/laravel-stapler v1.0.06
    - Conclusion: don't install codesleeve/laravel-stapler v1.0.05
    - Conclusion: don't install codesleeve/laravel-stapler v1.0.04
    - Conclusion: don't install codesleeve/laravel-stapler v1.0.03
    - codesleeve/stapler v1.0.0 requires doctrine/inflector v1.0 -> satisfiable by doctrine/inflector[v1.0].
    - codesleeve/stapler v1.0.01 requires doctrine/inflector v1.0 -> satisfiable by doctrine/inflector[v1.0].
    - codesleeve/stapler v1.0.02 requires doctrine/inflector v1.0 -> satisfiable by doctrine/inflector[v1.0].
    - Conclusion: don't install doctrine/inflector v1.0
    - Conclusion: don't install symfony/http-foundation v4.1.1|install codesleeve/stapler v1.0.0|install codesleeve/stapler v1.0.01|install codesleeve/stapler v1.0.02
    - Conclusion: don't install codesleeve/laravel-stapler v1.0.05|remove symfony/http-foundation v4.1.1|install codesleeve/stapler v1.0.0|install codesleeve/stapler v1.0.01|install codesleeve/stapler v1.0.02
    - Conclusion: don't install codesleeve/laravel-stapler v1.0.05|don't install symfony/http-foundation v4.1.1|install codesleeve/stapler v1.0.0|install codesleeve/stapler v1.0.01|install codesleeve/stapler v1.0.02
    - Conclusion: don't install codesleeve/laravel-stapler v1.0.04|remove symfony/http-foundation v4.1.1|install codesleeve/stapler v1.0.0|install codesleeve/stapler v1.0.01|install codesleeve/stapler v1.0.02
    - Conclusion: don't install codesleeve/laravel-stapler v1.0.04|don't install symfony/http-foundation v4.1.1|install codesleeve/stapler v1.0.0|install codesleeve/stapler v1.0.01|install codesleeve/stapler v1.0.02
    - Conclusion: don't install codesleeve/laravel-stapler v1.0.03|remove symfony/http-foundation v4.1.1|install codesleeve/stapler v1.0.0|install codesleeve/stapler v1.0.01|install codesleeve/stapler v1.0.02
    - Conclusion: don't install codesleeve/laravel-stapler v1.0.03|don't install symfony/http-foundation v4.1.1|install codesleeve/stapler v1.0.0|install codesleeve/stapler v1.0.01|install codesleeve/stapler v1.0.02
    - Installation request for codesleeve/laravel-stapler 1.0.* -> satisfiable by codesleeve/laravel-stapler[v1.0.0, v1.0.01, v1.0.02, v1.0.03, v1.0.04, v1.0.05, v1.0.06, v1.0.07, v1.0.08, v1.0.09].
    - Conclusion: remove symfony/http-foundation v4.1.1|install codesleeve/stapler v1.0.0|install codesleeve/stapler v1.0.01|install codesleeve/stapler v1.0.02
    - codesleeve/laravel-stapler v1.0.02 requires codesleeve/stapler 1.0.* -> satisfiable by codesleeve/stapler[v1.0.0, v1.0.0-Beta1, v1.0.0-Beta2, v1.0.0-Beta3, v1.0.0-Beta4, v1.0.01, v1.0.02, v1.0.03, v1.0.04, v1.0.05, v1.0.06].
    - codesleeve/stapler v1.0.03 requires symfony/http-foundation ~2.3 -> satisfiable by symfony/http-foundation[2.3.x-dev, 2.4.x-dev, 2.5.x-dev, 2.6.x-dev, 2.7.x-dev, 2.8.x-dev, v2.3.0, v2.3.1, v2.3.10, v2.3.11, v2.3.12, v2.3.13, v2.3.14, v2.3.15, v2.3.16, v2.3.17, v2.3.18, v2.3.19, v2.3.2, v2.3.20, v2.3.21, v2.3.22, v2.3.23, v2.3.24, v2.3.25, v2.3.26, v2.3.27, v2.3.28, v2.3.29, v2.3.3, v2.3.30, v2.3.31, v2.3.32, v2.3.33, v2.3.34, v2.3.35, v2.3.36, v2.3.37, v2.3.38, v2.3.39, v2.3.4, v2.3.40, v2.3.41, v2.3.42, v2.3.5, v2.3.6, v2.3.7, v2.3.8, v2.3.9, v2.4.0, v2.4.0-BETA1, v2.4.0-BETA2, v2.4.0-RC1, v2.4.1, v2.4.10, v2.4.2, v2.4.3, v2.4.4, v2.4.5, v2.4.6, v2.4.7, v2.4.8, v2.4.9, v2.5.0, v2.5.0-BETA1, v2.5.0-BETA2, v2.5.0-RC1, v2.5.1, v2.5.10, v2.5.11, v2.5.12, v2.5.2, v2.5.3, v2.5.4, v2.5.5, v2.5.6, v2.5.7, v2.5.8, v2.5.9, v2.6.0, v2.6.0-BETA1, v2.6.0-BETA2, v2.6.1, v2.6.10, v2.6.11, v2.6.12, v2.6.13, v2.6.2, v2.6.3, v2.6.4, v2.6.5, v2.6.6, v2.6.7, v2.6.8, v2.6.9, v2.7.0, v2.7.0-BETA1, v2.7.0-BETA2, v2.7.1, v2.7.10, v2.7.11, v2.7.12, v2.7.13, v2.7.14, v2.7.15, v2.7.16, v2.7.17, v2.7.18, v2.7.19, v2.7.2, v2.7.20, v2.7.21, v2.7.22, v2.7.23, v2.7.24, v2.7.25, v2.7.26, v2.7.27, v2.7.28, v2.7.29, v2.7.3, v2.7.30, v2.7.31, v2.7.32, v2.7.33, v2.7.34, v2.7.35, v2.7.36, v2.7.37, v2.7.38, v2.7.39, v2.7.4, v2.7.40, v2.7.41, v2.7.42, v2.7.43, v2.7.44, v2.7.45, v2.7.46, v2.7.47, v2.7.48, v2.7.5, v2.7.6, v2.7.7, v2.7.8, v2.7.9, v2.8.0, v2.8.0-BETA1, v2.8.1, v2.8.10, v2.8.11, v2.8.12, v2.8.13, v2.8.14, v2.8.15, v2.8.16, v2.8.17, v2.8.18, v2.8.19, v2.8.2, v2.8.20, v2.8.21, v2.8.22, v2.8.23, v2.8.24, v2.8.25, v2.8.26, v2.8.27, v2.8.28, v2.8.29, v2.8.3, v2.8.30, v2.8.31, v2.8.32, v2.8.33, v2.8.34, v2.8.35, v2.8.36, v2.8.37, v2.8.38, v2.8.39, v2.8.4, v2.8.40, v2.8.41, v2.8.42, v2.8.43, v2.8.5, v2.8.6, v2.8.7, v2.8.8, v2.8.9].
    - codesleeve/stapler v1.0.04 requires symfony/http-foundation ~2.3 -> satisfiable by symfony/http-foundation[2.3.x-dev, 2.4.x-dev, 2.5.x-dev, 2.6.x-dev, 2.7.x-dev, 2.8.x-dev, v2.3.0, v2.3.1, v2.3.10, v2.3.11, v2.3.12, v2.3.13, v2.3.14, v2.3.15, v2.3.16, v2.3.17, v2.3.18, v2.3.19, v2.3.2, v2.3.20, v2.3.21, v2.3.22, v2.3.23, v2.3.24, v2.3.25, v2.3.26, v2.3.27, v2.3.28, v2.3.29, v2.3.3, v2.3.30, v2.3.31, v2.3.32, v2.3.33, v2.3.34, v2.3.35, v2.3.36, v2.3.37, v2.3.38, v2.3.39, v2.3.4, v2.3.40, v2.3.41, v2.3.42, v2.3.5, v2.3.6, v2.3.7, v2.3.8, v2.3.9, v2.4.0, v2.4.0-BETA1, v2.4.0-BETA2, v2.4.0-RC1, v2.4.1, v2.4.10, v2.4.2, v2.4.3, v2.4.4, v2.4.5, v2.4.6, v2.4.7, v2.4.8, v2.4.9, v2.5.0, v2.5.0-BETA1, v2.5.0-BETA2, v2.5.0-RC1, v2.5.1, v2.5.10, v2.5.11, v2.5.12, v2.5.2, v2.5.3, v2.5.4, v2.5.5, v2.5.6, v2.5.7, v2.5.8, v2.5.9, v2.6.0, v2.6.0-BETA1, v2.6.0-BETA2, v2.6.1, v2.6.10, v2.6.11, v2.6.12, v2.6.13, v2.6.2, v2.6.3, v2.6.4, v2.6.5, v2.6.6, v2.6.7, v2.6.8, v2.6.9, v2.7.0, v2.7.0-BETA1, v2.7.0-BETA2, v2.7.1, v2.7.10, v2.7.11, v2.7.12, v2.7.13, v2.7.14, v2.7.15, v2.7.16, v2.7.17, v2.7.18, v2.7.19, v2.7.2, v2.7.20, v2.7.21, v2.7.22, v2.7.23, v2.7.24, v2.7.25, v2.7.26, v2.7.27, v2.7.28, v2.7.29, v2.7.3, v2.7.30, v2.7.31, v2.7.32, v2.7.33, v2.7.34, v2.7.35, v2.7.36, v2.7.37, v2.7.38, v2.7.39, v2.7.4, v2.7.40, v2.7.41, v2.7.42, v2.7.43, v2.7.44, v2.7.45, v2.7.46, v2.7.47, v2.7.48, v2.7.5, v2.7.6, v2.7.7, v2.7.8, v2.7.9, v2.8.0, v2.8.0-BETA1, v2.8.1, v2.8.10, v2.8.11, v2.8.12, v2.8.13, v2.8.14, v2.8.15, v2.8.16, v2.8.17, v2.8.18, v2.8.19, v2.8.2, v2.8.20, v2.8.21, v2.8.22, v2.8.23, v2.8.24, v2.8.25, v2.8.26, v2.8.27, v2.8.28, v2.8.29, v2.8.3, v2.8.30, v2.8.31, v2.8.32, v2.8.33, v2.8.34, v2.8.35, v2.8.36, v2.8.37, v2.8.38, v2.8.39, v2.8.4, v2.8.40, v2.8.41, v2.8.42, v2.8.43, v2.8.5, v2.8.6, v2.8.7, v2.8.8, v2.8.9].
    - codesleeve/stapler v1.0.05 requires symfony/http-foundation ~2.3 -> satisfiable by symfony/http-foundation[2.3.x-dev, 2.4.x-dev, 2.5.x-dev, 2.6.x-dev, 2.7.x-dev, 2.8.x-dev, v2.3.0, v2.3.1, v2.3.10, v2.3.11, v2.3.12, v2.3.13, v2.3.14, v2.3.15, v2.3.16, v2.3.17, v2.3.18, v2.3.19, v2.3.2, v2.3.20, v2.3.21, v2.3.22, v2.3.23, v2.3.24, v2.3.25, v2.3.26, v2.3.27, v2.3.28, v2.3.29, v2.3.3, v2.3.30, v2.3.31, v2.3.32, v2.3.33, v2.3.34, v2.3.35, v2.3.36, v2.3.37, v2.3.38, v2.3.39, v2.3.4, v2.3.40, v2.3.41, v2.3.42, v2.3.5, v2.3.6, v2.3.7, v2.3.8, v2.3.9, v2.4.0, v2.4.0-BETA1, v2.4.0-BETA2, v2.4.0-RC1, v2.4.1, v2.4.10, v2.4.2, v2.4.3, v2.4.4, v2.4.5, v2.4.6, v2.4.7, v2.4.8, v2.4.9, v2.5.0, v2.5.0-BETA1, v2.5.0-BETA2, v2.5.0-RC1, v2.5.1, v2.5.10, v2.5.11, v2.5.12, v2.5.2, v2.5.3, v2.5.4, v2.5.5, v2.5.6, v2.5.7, v2.5.8, v2.5.9, v2.6.0, v2.6.0-BETA1, v2.6.0-BETA2, v2.6.1, v2.6.10, v2.6.11, v2.6.12, v2.6.13, v2.6.2, v2.6.3, v2.6.4, v2.6.5, v2.6.6, v2.6.7, v2.6.8, v2.6.9, v2.7.0, v2.7.0-BETA1, v2.7.0-BETA2, v2.7.1, v2.7.10, v2.7.11, v2.7.12, v2.7.13, v2.7.14, v2.7.15, v2.7.16, v2.7.17, v2.7.18, v2.7.19, v2.7.2, v2.7.20, v2.7.21, v2.7.22, v2.7.23, v2.7.24, v2.7.25, v2.7.26, v2.7.27, v2.7.28, v2.7.29, v2.7.3, v2.7.30, v2.7.31, v2.7.32, v2.7.33, v2.7.34, v2.7.35, v2.7.36, v2.7.37, v2.7.38, v2.7.39, v2.7.4, v2.7.40, v2.7.41, v2.7.42, v2.7.43, v2.7.44, v2.7.45, v2.7.46, v2.7.47, v2.7.48, v2.7.5, v2.7.6, v2.7.7, v2.7.8, v2.7.9, v2.8.0, v2.8.0-BETA1, v2.8.1, v2.8.10, v2.8.11, v2.8.12, v2.8.13, v2.8.14, v2.8.15, v2.8.16, v2.8.17, v2.8.18, v2.8.19, v2.8.2, v2.8.20, v2.8.21, v2.8.22, v2.8.23, v2.8.24, v2.8.25, v2.8.26, v2.8.27, v2.8.28, v2.8.29, v2.8.3, v2.8.30, v2.8.31, v2.8.32, v2.8.33, v2.8.34, v2.8.35, v2.8.36, v2.8.37, v2.8.38, v2.8.39, v2.8.4, v2.8.40, v2.8.41, v2.8.42, v2.8.43, v2.8.5, v2.8.6, v2.8.7, v2.8.8, v2.8.9].
    - codesleeve/stapler v1.0.06 requires symfony/http-foundation ~2.3 -> satisfiable by symfony/http-foundation[2.3.x-dev, 2.4.x-dev, 2.5.x-dev, 2.6.x-dev, 2.7.x-dev, 2.8.x-dev, v2.3.0, v2.3.1, v2.3.10, v2.3.11, v2.3.12, v2.3.13, v2.3.14, v2.3.15, v2.3.16, v2.3.17, v2.3.18, v2.3.19, v2.3.2, v2.3.20, v2.3.21, v2.3.22, v2.3.23, v2.3.24, v2.3.25, v2.3.26, v2.3.27, v2.3.28, v2.3.29, v2.3.3, v2.3.30, v2.3.31, v2.3.32, v2.3.33, v2.3.34, v2.3.35, v2.3.36, v2.3.37, v2.3.38, v2.3.39, v2.3.4, v2.3.40, v2.3.41, v2.3.42, v2.3.5, v2.3.6, v2.3.7, v2.3.8, v2.3.9, v2.4.0, v2.4.0-BETA1, v2.4.0-BETA2, v2.4.0-RC1, v2.4.1, v2.4.10, v2.4.2, v2.4.3, v2.4.4, v2.4.5, v2.4.6, v2.4.7, v2.4.8, v2.4.9, v2.5.0, v2.5.0-BETA1, v2.5.0-BETA2, v2.5.0-RC1, v2.5.1, v2.5.10, v2.5.11, v2.5.12, v2.5.2, v2.5.3, v2.5.4, v2.5.5, v2.5.6, v2.5.7, v2.5.8, v2.5.9, v2.6.0, v2.6.0-BETA1, v2.6.0-BETA2, v2.6.1, v2.6.10, v2.6.11, v2.6.12, v2.6.13, v2.6.2, v2.6.3, v2.6.4, v2.6.5, v2.6.6, v2.6.7, v2.6.8, v2.6.9, v2.7.0, v2.7.0-BETA1, v2.7.0-BETA2, v2.7.1, v2.7.10, v2.7.11, v2.7.12, v2.7.13, v2.7.14, v2.7.15, v2.7.16, v2.7.17, v2.7.18, v2.7.19, v2.7.2, v2.7.20, v2.7.21, v2.7.22, v2.7.23, v2.7.24, v2.7.25, v2.7.26, v2.7.27, v2.7.28, v2.7.29, v2.7.3, v2.7.30, v2.7.31, v2.7.32, v2.7.33, v2.7.34, v2.7.35, v2.7.36, v2.7.37, v2.7.38, v2.7.39, v2.7.4, v2.7.40, v2.7.41, v2.7.42, v2.7.43, v2.7.44, v2.7.45, v2.7.46, v2.7.47, v2.7.48, v2.7.5, v2.7.6, v2.7.7, v2.7.8, v2.7.9, v2.8.0, v2.8.0-BETA1, v2.8.1, v2.8.10, v2.8.11, v2.8.12, v2.8.13, v2.8.14, v2.8.15, v2.8.16, v2.8.17, v2.8.18, v2.8.19, v2.8.2, v2.8.20, v2.8.21, v2.8.22, v2.8.23, v2.8.24, v2.8.25, v2.8.26, v2.8.27, v2.8.28, v2.8.29, v2.8.3, v2.8.30, v2.8.31, v2.8.32, v2.8.33, v2.8.34, v2.8.35, v2.8.36, v2.8.37, v2.8.38, v2.8.39, v2.8.4, v2.8.40, v2.8.41, v2.8.42, v2.8.43, v2.8.5, v2.8.6, v2.8.7, v2.8.8, v2.8.9].
    - Can only install one of: symfony/http-foundation[2.3.x-dev, v4.1.1].
    - Can only install one of: symfony/http-foundation[2.4.x-dev, v4.1.1].
    - Can only install one of: symfony/http-foundation[2.5.x-dev, v4.1.1].
    - Can only install one of: symfony/http-foundation[2.6.x-dev, v4.1.1].
    - Can only install one of: symfony/http-foundation[2.7.x-dev, v4.1.1].
    - Can only install one of: symfony/http-foundation[2.8.x-dev, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.0, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.1, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.10, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.11, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.12, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.13, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.14, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.15, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.16, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.17, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.18, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.19, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.2, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.20, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.21, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.22, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.23, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.24, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.25, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.26, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.27, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.28, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.29, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.3, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.30, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.31, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.32, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.33, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.34, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.35, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.36, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.37, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.38, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.39, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.4, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.40, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.41, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.42, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.5, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.6, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.7, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.8, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.3.9, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.4.0, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.4.0-BETA1, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.4.0-BETA2, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.4.0-RC1, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.4.1, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.4.10, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.4.2, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.4.3, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.4.4, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.4.5, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.4.6, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.4.7, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.4.8, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.4.9, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.5.0, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.5.0-BETA1, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.5.0-BETA2, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.5.0-RC1, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.5.1, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.5.10, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.5.11, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.5.12, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.5.2, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.5.3, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.5.4, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.5.5, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.5.6, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.5.7, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.5.8, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.5.9, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.6.0, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.6.0-BETA1, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.6.0-BETA2, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.6.1, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.6.10, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.6.11, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.6.12, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.6.13, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.6.2, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.6.3, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.6.4, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.6.5, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.6.6, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.6.7, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.6.8, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.6.9, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.0, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.0-BETA1, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.0-BETA2, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.1, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.10, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.11, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.12, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.13, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.14, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.15, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.16, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.17, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.18, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.19, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.2, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.20, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.21, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.22, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.23, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.24, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.25, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.26, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.27, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.28, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.29, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.3, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.30, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.31, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.32, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.33, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.34, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.35, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.36, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.37, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.38, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.39, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.4, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.40, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.41, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.42, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.43, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.44, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.45, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.46, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.47, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.48, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.5, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.6, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.7, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.8, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.7.9, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.0, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.0-BETA1, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.1, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.10, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.11, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.12, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.13, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.14, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.15, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.16, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.17, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.18, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.19, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.2, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.20, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.21, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.22, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.23, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.24, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.25, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.26, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.27, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.28, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.29, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.3, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.30, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.31, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.32, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.33, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.34, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.35, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.36, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.37, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.38, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.39, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.4, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.40, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.41, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.42, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.43, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.5, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.6, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.7, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.8, v4.1.1].
    - Can only install one of: symfony/http-foundation[v2.8.9, v4.1.1].
    - Installation request for symfony/http-foundation (locked at v4.1.1) -> satisfiable by symfony/http-foundation[v4.1.1].


Installation failed, reverting ./composer.json to its original content.