https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=21624 Bug ID: 21624 Summary: Viewing check out history for a bib where old_issues.biblionumber is NULL triggers internal server error. Change sponsored?: --- Product: Koha Version: 18.05 Hardware: All OS: All Status: NEW Severity: normal Priority: P5 - low Component: Staff Client Assignee: koha-bugs@lists.koha-community.org Reporter: barton@bywatersolutions.com QA Contact: testopia@bugs.koha-community.org CC: gmcharlt@gmail.com To replicate: 1) Check out item X to patron P 2) Return item X 3) Delete patron P 4) Go to details for item X and click the 'Checkout history' tab. This generates an internal server error. This is a regression between 17.11 and 18.05; I haven't tried to replicate it yet on master. -- You are receiving this mail because: You are the assignee for the bug. You are watching all bug changes.