Hi, I'm encountering a problem similar to one of the first problems on this forum. I'm getting the "Anilist returned an error: Internal Server Error" problem. However the fix to that seemed to be because an email address was used, not a username. I'm using my user name and it's still happening.
I recently imported my anime over from MAL to anilist, switched services over to anilist and authorized my account. It synced and successfully downloaded my anime list. The problem starts when i have finished watching an episode and update the episode count on taiga, it queues it up and returns the error "Anilist returned an error: Internal Server Error" and does not update.
However i can get it to update on the anilist site, but not on taiga, using taiga by doing the following.
This will update my anilist profile once. For example if i click the + twice, it will only update the first episode, or if i update two different anime episode counts, only the first one i did will be updated on anilst. However it does not update on taiga and still stays in the queue. So to update a second episode i have to delete the history, sync and +1 again.
I think i have done something wrong and not sure how to get it working properly.