Dear Sir, I recently upgraded from koha 3.18 to 3.20 on debian 7.1. Presently I got software error on koha opac and staff client page. My website is library.cutn.ac.in The following are the errors respectively. Software error: Can't call method "param" on an undefined value at /usr/share/koha/lib/C4/Auth.pm line 450. For help, please send mail to the webmaster ([no address given]), giving this error message and the time and date of the error. Software error: Can't call method "param" on an undefined value at /usr/share/koha/lib/C4/Auth.pm line 786. For help, please send mail to the webmaster ([no address given]), giving this error message and the time and date of the error. I found in the internet that you faced a similar error, so please help or suggest some one who can be of some help. Thanks, A. ChandrashekaranDear Sir, I recently upgraded from koha 3.18 to 3.20 on debian 7.1. Presently I got software error on koha opac and staff client page. My website is library.cutn.ac.in The following are the errors respectively. Software error: Can't call method "param" on an undefined value at /usr/share/koha/lib/C4/Auth.pm line 450. For help, please send mail to the webmaster ([no address given]), giving this error message and the time and date of the error. Software error: Can't call method "param" on an undefined value at /usr/share/koha/lib/C4/Auth.pm line 786. For help, please send mail to the webmaster ([no address given]), giving this error message and the time and date of the error. ____________ *I tried restoring in a new server using mysqldump and got the same error. Please help.* Thanks, A. Chandrashekaran