@zonk Ok, so it looks like I'm no longer getting error 500 when trying to interact with the outside, but that doesn't solve:
Mastodon::UnexpectedResponseError: Delivery failed for https://shigusegubu.club/users/DetectiveHyde/inbox: https://shigusegubu.club/users/DetectiveHyde/inbox returned code 500

@matrix that could mean absolutely anything, maybe try looking at the logs that masto gives you?

@zonk That one says the same. Now that I deleted the original and posted it again, it got delivered.