Can't push - stuck on 'Pushing to origin' - GitHub SSH - SourceTree - Mac

[kanakobuta]

Use

MacOS 11.6.3

SourceTree4.1.6

ーーーー

Added GitHub account and created remote repository successfully. 

However, push process doesn't work well.

I can't push my local repository to GitHub at all.

There is no error, just stuck on 'Pushing to origin'..., and after 'cancel', '

Completed with errors, see above' appeared, but there is no error.

How can I resolve this issue?

[RayR75]

I have exactly that same issue. My work is on hold now and I do not know how to fix this. Anyone had the same and found a solution?