Composer Error on new Deploy

I recently changed 2 lines in a view and pushed the code to github. When I deployed on Laravel Forge (After about 2 weeks of no updates) & I got the following error:

"error":{
"type":"ErrorException",
"message":"Declaration of Illuminate\\View\\Engines\\CompilerEngine::handleViewException() should be compatible with Illuminate\\View\\Engines\\PhpEngine::handleViewException($e)",
"file":"\/home\/forge\/default\/vendor\/laravel\/framework\/src\/Illuminate\/View\/Engines\/CompilerEngine.php",
"line":100
}
}{"error":{"type":"ErrorException","message":"Declaration of Illuminate\\View\\Engines\\CompilerEngine::handleViewException() should be compatible with Illuminate\\View\\Engines\\PhpEngine::handleViewException($e)","file":"\/home\/forge\/default\/vendor\/laravel\/framework\/src\/Illuminate\/View\/Engines\/CompilerEngine.php","line":100}}

I then ran 'composer diagnosis' and got:

Checking composer.json: FAIL
require.damianromanowski/simplecdn : unbound version constraints (dev-master) should be avoided
require.roumen/feed : unbound version constraints (dev-master) should be avoided
require.themonkeys/error-emailer : unbound version constraints (dev-master) should be avoided
require.abodeo/laravel-stripe : unbound version constraints (dev-master) should be avoided
require.mattbrown/laracurl : unbound version constraints (dev-master) should be avoided
require.themonkeys/cachebuster : unbound version constraints (dev-master) should be avoided
Checking platform settings: FAIL
The xdebug extension is loaded, this can slow down Composer a little.
Disabling it when using Composer is recommended, but should not cause issues beyond slowness.
Checking git settings: OK
Checking http connectivity: OK
Checking disk free space: OK
Checking composer version: OK 

How would I make that error go away? Never seen it before and not exactly sure what's wrong.