Call to undefined function Illuminate\Encryption\openssl_cipher_iv_length() - laraval5

Question

I'm building a Laravel application, It worked fine yesterday when I launched the server using

php artisan serve --port:8080

Due to some problem with wampserver for other applications I create, I had to delete it and install it again but still, my larval application worked fine.

Today when I started the server I got this error :

FatalThrowableError (E_ERROR) Call to undefined function Illuminate\Encryption\openssl_cipher_iv_length()

OpenSSL is activated in my PHP and I tried to run composter update but I got this error :

Can you help solve this problem?

Answer 1

php artisan key:generate can solve cipher problem