To recreate: 1. Go to an item record 2. Add/edit items 3. From the action bar of the left click 'Print label' 4. 500 error: Can't use string ("-2") as a HASH ref while "strict refs" in use at /kohadevbox/koha/labels/label-edit-batch.pl line 122
*** This bug has been marked as a duplicate of bug 37192 ***