Password for Admin dont work

Hey, i created a Sylius shop on my webserver. When i got to the website and on /admin this happens:

I reinstalled to times but everytime the same error. Please help

Thanks
Felix

Hey!, you have a debug history at you right bottom corner, just click on the Symfony icon.
It will explain you what is happening.

Cheers!

Edit: you can also inspect running code with xdebug or zenddebug if your IDE supports it.