The only supported ciphers are AES-128-CBC and AES-256-CBC with the correct key lengths. laravel 5.3

Question

I installed a new fresh copy of Laravel 5.3 using composer but I\'m getting this error:

The only supported ciphers are AES-128-CBC and AES-256-CBC wit

Answer 1

Run php artisan key:generate.

Do php artisan config:clear,

Then php artisan config:cache

And things will start working!