Hi there @pfaffman , it looks like the recent updates to GitHub - pfaffman/discourse-allow-pm-to-staff: Allow private messages to be sent to staff for users who could otherwise not send private messages. · GitHub have broken sending PMs between normal users. Specifically, normal users can respond to already existing PM topics but not create new PM topics. This is the error:
I didn’t really understand the function of the allow_pm_allowed_pm_groups setting, but I tried setting it to staff,trust_level_0,trust_level_1,trust_level_2 but the problem persisted. I disabled the plugin and PMs are now working normally again.