mbox2gg does not proceed after approval about mail2googlegroup

[siliconpi]

Some weird things are happening!!

I left the terminal alone and I come back after a while to see this:
...
Processing emails: 1%|▏ | 1581/126232 [04:34<5:40:16, 6.11it/s]

Okay, but the Google Group is completely empty! Where is the program placing the emails? They are not in my gmail.com either!

[siliconpi]

Sigh... its just dumping gigabytes of errors into errors.mbox and not actually processing anything.

No helpful error message anywhere. Just raw data of the email being saved there for some reason.

[jayhendren]

I'm seeing this same issue. errors.mbox contains every message in my mbox file and no errors, but my Google Group is empty. @siliconpi did your messages ever get uploaded to your Google Group? How did you fix/work around this issue?

[jayhendren]

Looks like the error message is thrown away when logging to the errors file - msg_string is the e-mail message and error is the caught exception:

mail2googlegroup/mail2gg/__init__.py

Lines 78 to 79 in 787f627

	def handle_error(self, error, uid, msg_string):
	self.error_mbox.add(msg_string)

I edited this file (i.e. ~/.local/lib/python3.10/site-packages/mail2gg/__init__.py) to log the exception and discovered that the issue in my case was a 401 Unauthorized error:

googleapiclient.errors.HttpError: <HttpError 401 when requesting https://groupsmigration.googleapis.com/upload/groups/v1/groups/redacted%40redacted.com/archive?alt=json&uploadType=media returned "Authorization Failed". Details: "[{'message': 'Authorization Failed', 'domain': 'global', 'reason': 'authError', 'location': 'Authorization', 'locationType': 'header'}]">