[Koha] Error after upgrading to latest version of Koha

I just recently upgraded to Koha 16.11.08 and the database schema conversion completed OK (based on the screen prompts). However, when I log into the staff client I get the following error message on the screen and no staff menu: Can't call method "param" on an undefined value at /usr/share/koha/lib/C4/Auth.pm line 492. Is there a workaround for this error? Rev. George Masters Director Orthodox Christian Library System 408.242.4632