Error Malformed auth code

[xuanlongvts]

hi there,

from this demo: https://github.com/googleworkspace/go-samples/blob/master/gmail/quickstart/quickstart.go

I got an error with message:

2023/03/29 14:40:18 Unable to retrieve token from web: oauth2: cannot fetch token: 400 Bad Request
Response: {
"error": "invalid_grant",
"error_description": "Malformed auth code."
}

After i copy the url redirect from browser and then enter in command line, It shows the above error

[s4m1r0d4]

In my case it does open the authentication web page but at the end it redirects to an incorrect webpage:
http://localhost/?state=state-token&code=XXXXXXXXX&scope=https://www.googleapis.com/auth/gmail.readonly

Code parameter censured for obvious reasons.

[jsalgado2510]

In my case it does open the authentication web page but at the end it redirects to an incorrect webpage: http://localhost/?state=state-token&code=XXXXXXXXX&scope=https://www.googleapis.com/auth/gmail.readonly

Code parameter censured for obvious reasons.

There is an workaround for this, I had the same problem:
#76 (comment)