You need to post the settings map somewhere. You can find it here:
I can try to replicate it with an 1:1 copy of your settings map.
debug_modules = ["settings"]; in
data/conf/rspamd/override.d/logging.inc and restart Rspamd. Check and post
docker-compose logs --tail=200 -f rspamd-mailcow logs. The logs must contain the moment the settings map failed.