https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=8137 --- Comment #148 from Fridolin Somers <fridolin.somers@biblibre.com> --- Hi, There might be an issue in get_effective_rule_value() : my $memory_cache = Koha::Cache::Memory::Lite->get_instance; my $cache_key = sprintf "CircRules:%s:%s:%s:%s", $rule_name // q{}, $categorycode // q{}, $branchcode // q{}, $itemtype // q{} ,$has_priority // q{}; It generates error [WARN] Redundant argument in sprintf Maybe sprintf is missing a "%s" -- You are receiving this mail because: You are watching all bug changes.