Hello Russian,

I have help you solved, what i did is go to your Joomla backend > Easydiscuss > setting > Layout > General > select Compile stylesheet to "Cache" > Save > Then go back the page Click "test compile" (test admin, site, and module) > when all test completed > then go to Easydiscuss Dashboard > Click "Clear Cache" > Then clear Joomla cache, then the error message will not show out.

Also, when i access with your Discuss page, i getting this error :

Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 32 bytes) in /home/ifdsgmc/public_html/components/com_easydiscuss/classes/lessc.inc.php on line 776

It seems like your Memory_size have to increase at least 128M (Recommended).

Hope this help.