Bug 20499:Fix the Internal Server Error ...by: Jonathan Druart <jonathan.druart@bugs.koha-community.org> ...by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Bug 20499:Unit Test to prove the problem ...by: Jonathan Druart <jonathan.druart@bugs.koha-community.org> ...by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>