swaylock effects https://github.com/mortie/swaylock-effects has been abandoned and been taken over by https://github.com/jirutka/swaylock-effects see here https://github.com/mortie/swaylock-effects/issues/92
fixed in https://cgit.gentoo.org/repo/proj/guru.git/commit/?id=d6b25a7bf1cda5031f0ef1e7e7afdb6f84eaefa0