The Unknown remote execution feature katello_module_stream_action sounds like something is not matching or executed in wrong order and there is already an issue for it: Bug #31416: db seed fails with 'Unknown remote execution feature katello_module_stream_action' - Katello - Foreman
There is a fix included in Fixes #31416 - Make sure remote execution plugin is already loaded before katello by ShimShtein · Pull Request #9025 · Katello/katello · GitHub, can you test it? If it works this has to be backported to 3.18 and I will try to get someone to do it.