When I try to download the file it gives this error message"Software error:

HTML::Template::param() : attempt to set parameter 'plans' with an array ref - parameter is not a TMPL_LOOP! at Modules/Session.pm line 216"

How to solve it?please help me.Thanks

When I try to login It gives this error message
Software error:

Can't exec:
Table './admin_xfs/Sessions' is marked as crashed and should be repaired at Modules/DataBase.pm line 55.


How to fix it.Please help me.Thanks

I am getting "504 Gateway Time-out nginx/1.2.1" error.How to fix it?