Class 'Illuminate\Foundation\Application' not found Laravel

Question

I installed via composer the Guzzle and i received this error,

> @php artisan package:discover
PHP Fatal error:  Uncaught Error: Class \'Illuminate\\Found         


        

Answer 1

Delete vendor folder and composer.lock.

After that

composer install

then

composer update --no-scripts

Try this, this will solve your error. Note: Please make sure you have all packages in composer.json.