https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=28699 --- Comment #1 from Nick Clemens <nick@bywatersolutions.com> --- Created attachment 122745 --> https://bugs.koha-community.org/bugzilla3/attachment.cgi?id=122745&action=edit Bug 28699: Allow for blank firstname in checkauth When mapping the fields from the session we should map blank fieds to blank strings To test: 1 - Remove first name from a patron 2 - tail -f /var/log/koha/kohadev/plack-opac-error.log 3 - Login as that patron on the opac 4 - Note warns in the log like: [2021/07/09 13:22:54] [WARN] Use of uninitialized value in sprintf at /kohadevbox/koha/C4/Auth.pm line 888. 5 - Apply patch 6 - restart_all 7 - Log out and in to opac with user 8 - Note warns above are gone -- You are receiving this mail because: You are the assignee for the bug. You are watching all bug changes.