Upload library error with new Apple file format and HEIF

I never do that but it will be cool. I don't know how it's work to push modification like this... I make I try but sourcetree give me an error

Code:

Pushing to https://github.com/bcit-ci/CodeIgniter.git
remote: Permission to bcit-ci/CodeIgniter.git denied to wobility.
fatal: unable to access 'https://github.com/bcit-ci/CodeIgniter.git/': The requested URL returned error: 403

In addition to what I said, I would like to add that the behavior of the iPhone is specific, because the file sent from the iPhone does not seem to be in HEIC format? Because it works from an iPhone but not from my computer. Maybe a modification on the fly before sending, I don't know.