500 Internal Server Error

So first off this theme is call Risen. This project was put in my lap so I don’t know if that matter. Anyhow, I was trying to upload some plugins. First I tried through admin, then the control panel on the server. Nothing
ever fully downloaded.

Then all of a sudden I’m locked out with a 500 Internal server error. I cleared my cache and went back to the server to see if anything looked funny. Now I’m just stuck and have no idea ho to acess mny site. ( I have tried other internet platforms, i.e Chrome, firefox)

Any help would be greatly appreciated.