after i change composer.jason file Script @php artisan package:discover handling the post-autoload-dump event returned with error code 1

after i change composer.jason file bellow errors are displayed.how can i fix it? Script @php artisan package:discover handling the post-autoload-dump event returned with error code 1

"require": {
    "php": "^7.1.3",
    "consoletvs/charts": "5.*",
    "fideloper/proxy": "^4.0",
    "genealabs/laravel-caffeine": "^0.7.1",
    "laravel/framework": "5.7.*",
    "laravel/tinker": "^1.0",
    "laravelcollective/html": "5.7.*" //I changed this line
},

via Chebli Mohamed