[Koha] opac.user.pl error

I am facing a problem when user having issue and logging in from opac get server error any one have any solving for this problem . using v2.2.8. appchi 2.0.59 thanks _________________________________________________________________ Kick back and relax with hot games and cool activities at the Messenger Café. http://www.cafemessenger.com?ocid=TXT_TAGLM_SeptWLtagline