Resolved -
We've seen an elevated rate of http 500 errors returned by Fitbit's developer API (api.fitbit.com) , particularly to requests to create or refresh OAuth2 tokens (POST /oauth2/token). As many as 1-4% of requests are returning slowly or returning http 500 errors.
While the issue started at 2022-05-16 21:09 UTC and subsided at 2022-05-16 21:34 UTC, but we're investigating to make sure we understand the root cause.
May 16, 14:00 PDT