Please provide basic information that allows reproducing the problem (old bot name; new bot name; how and where you log in) - see https://www.mediawiki.org/wiki/How_to_report_a_bug . Thanks!

1. Go to https://paws.wmflabs.org/paws/hub/login with Google Chrome.
2. Click Sign in with MediaWiki button
3. Login with maathavanbot account (*already login in jupyter with the account TamizhBOT through MediaWiki and changed it account name as Maathavanbot. )
4. It goes to OAuth. I clicked allow.
5. error becomes as :-

502 Bad Gateway

nginx/1.9.4

@Aklapper

Thanks for adding those steps!

@Aklapper What can I do? if there any way?

@Maathavan does this work for you now?

I have had to restart all the notebooks due to some NFS issues. Re-logging in should work now. Apologies for the issues!

@yuvipanda It doesn't works. same reply.

@Maathavan now?

@yuvipanda No, same

@Maathavan how about now?

Can you try logging in in a different browser?

@yuvipanda No, I'd tried in Safari and Google Chrome. Same result.

Its works to Maathavan Account, But didn't work to Maathavanbot.

If it work by deleting TamizhBOT's Server.

@Maathavan when I try to sign in now, I also get the 503. But if I perform a hard refresh of the page (shift + f5 or ctrl + f5) it seems to fix itself. Can you try that?

Also can you clarify if TamizhBOT works or not? I see it is logged in.

TamizhBOT's account was deleted. I already work with that account in Tamilwiki workshop. Its work.

I tried hard refresh of the page. but it does not seems to fix itself.

Can you give me the exact name of the account that is failing to work?

(I can also talk in tamil if that is easier for you!)

Maathavanbot என்ற கணக்கே வேலை செய்யவில்லை.

@yuvipanda Hello.

மன்னிக்கவும், வேரு வெலை அதிகமாகி விட்டது.

Maathavanbot என்ற கணக்கை டெலீட் செய்து விட்டேன். இபோ டிரய் பன்னுன்க? அதன் பழ்ய பயனர் பெயர் என்ன?

In T135306#2363082, @yuvipanda wrote:

மன்னிக்கவும், வேரு வெலை அதிகமாகி விட்டது.

Maathavanbot என்ற கணக்கை டெலீட் செய்து விட்டேன். இபோ டிரய் பன்னுன்க? அதன் பழ்ய பயனர் பெயர் என்ன?

Hey Yuvi, Seems the account TamizhBOT got globally renamed to Maathavanbot. So after the rename, it seems he is not able to login to Maathavanbot. TamizhBOT OAuth Preference might get copied to Maathavanbot and it might be breaking something?
btw தமிழ்ல தட்டச்சு பண்ண ரொம்ப கஷ்டப் பட்டிருப்பீங்க போல? :P

@yuvipanda same reaction

@Maathavan I think I've fixed this now finally. Can you try again?

@yuvipanda No!!!!

One month later:
@yuvipanda, @Maathavan, any news here?
And who should this be assigned to?

Well, looks like that particular user account still can not log in, and I haven't had time to look into it yet. I'm on vacation for a week now, so maybe I can look at it after?

Any news here? Still an issue? Or resolved in the meantime?

Is this still a problem?

@Aklapper As no commits was pushed on on Github since many months, I suppose that this issue is not resolved right now.

@yuvipanda Are you agree if we merge T135306: HTTP 502 Bad Gateway error when trying to log into my bot in JUPYTER as duplicate with this task ? I suppose that they come from the same problem, because of username change.

Not only by me, few others too, Still facing the issue as mentioned below
https://phabricator.wikimedia.org/T140525

@Maathavan Is this still a problem for you? I could look into it if it is.