No longer able to create repos on Github using SourceTree

Question

Hello, I am unable to create repositories on Github using SourceTree. Unsure when the issues started, I just noticed it yesterday. I am still able to do commits to existing repos and clone existing repos, I just can't create new repos.
Running OS X Mojave, 10.14.1
Running SourceTree 3.0.1 (205)

I already reached out to Github, below is what they had to say:

"Thanks for reaching out. I don't see any problems on our end with your account. The error you were shown is something returned by our API, but we didn't develop SourceTree so it's hard for us to say what kind of API request the application is making in order to explain why the API is responding in such a way. Can you reach out to SourceTree support and ask for logs which show the exact API request that is being made (including all headers)? That should help us help you debug. On our end, there are no problem with the API and other users are able to create repositories via the API, so this seems like a problem on your end with SourceTree and we need more information to help you debug."

Thank you for any help.
Doug

Doug Edgington · Answer

I am still experiencing the same issue of not being able to create a remote repo on Github. I also tried removing and reinstalling Sourcetree. Any recommendations?

Doug Edgington · Answer

I tried to create a ticket using the link above, but I didn't know what info to provide for most of the fields, and it wouldn't let me leave the fields empty, even when using the custom setting. So the info I have is below.

MacOS Mojave 10.14.2
SourceTree Version 3.0.1 (205)

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New -> Create Remote Repository

Under Network Monitor
Context: GHFetchTeams
Body: empty

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Create Remote Repository -> Create (button)

Under Network Monitor
Conetxt: GHCreateRemoteReop
Body: {"name":"test-repo","private":false,"description":"This is a test repo."}

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The pop-up error that I get.

Doug Edgington · Answer

Thank you for the reply. I will perform the above tasks and post the results here within the next day or two.

Thanks again.