HTTP 500 Laravel 5 app using dokku on digital ocean

So i followed the tutorial about deploying a larval 5 application using dokku and it worked but i have a HTTP ERROR 500 can't see any logs using dukku logs so i used

dokku run app /bin/bash

started another local server in the app directory and curl it to see in storage/logs

No supported encrypter found. The cipher and / or key length are invalid.

which mean the APP_KEY is incorrect (i have it in .ENV in my local env) but when i push to my VPS it remove the whole line

using dokku run wizzserv php artisan key:generate result in

Application key [xxxxxxxxxxxxxxxxxxxxxxxxxxxx] set successfully.

but it's not working

TL;DR

pushed my code which work locally to Digital Ocean using dokku deployement succeed but getting HTTP 500 error about APP_KEY random string dokku remove it from .ENV

via Chebli Mohamed