[Solved] Class LumenServiceProvider not found

While using Lumen 5.5 with Tymon JWT Auth 0.5.12, I cannot generate secret key.

[Symfony\Component\Debug\Exception\FatalThrowableError]
Class 'Tymon\JWTAuth\Providers\LumenServiceProvider' not found

I followed this method described by Tymon for Lumen specifically: https://github.com/tymondesigns/jwt-auth/issues/1102

Solved while using ^1.0@dev vesion of JWT Auth