Laravel spark fresh pull from bitbucket

After i clone my laravel spark project from bitbucket, i ran a series of commands.

1. composer install
2. npm install
3. gulp
4. add the .env file
5. php artisan migrate --seed

But when i ran the project, I got this error:

FatalThrowableError in compiled.php line 7633: Class 'Laravel\Spark\Providers\SparkServiceProvider' not found

How will I fix this?