after installing these plugins:
- Concatenate Js/Css and
- SimpleCache
I get this error in backend:
Error: <!DOCTYPE html>
<html lang="de">
I have this behaviour at two sites. Other sites without these plugins are working. How can I reach the backend or what have I to do to reach the backend?
Regards Uwe
turn on safe mode: http://www.impresspages.org/docs/safe-mode/ It turns off all plugins.
You also make plugins inactive by going to the database and altering ip_plugin table records.