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

I'm on Laravel 5.8, and I keep getting this error

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

I have this

APP_KEY=LkZ0Tg3akce***eBABo2QM4VdEyeYWoPY

I have this in my config/app.php

'cipher' => 'AES-256-CBC',

via Chebli Mohamed