After adding a message and clicking on <Commit>, there's a loading bar that takes 1-2 minutes to push a change to my repository. It used to be instant.
Also, if I click on <Sync Changes> (screenshot below) after writing a message and adding a commit, I get an error in the Git log:
fatal: Not possible to fast-forward, aborting.
To get around the fatal error, I have to click on the 3-dot menu and click <Push>. Then <Sync Changes> goes away. I used to be able to click <Sync Changes> with no fatal error.

Visual Studio Code Version: 1.62.0
Ubuntu Version: 20.04.3 LTS
RAM: 16GB
CPU: AMD Ryzen 5 2600
Extensions: One Dark Pro Atom Theme, Pylance and Python.