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

If the artisan command doesn't work and you get the same error in the command line, that means composer didn't do a good job at getting all the files, you should delete the vendor folder and run composer update again.