
How to Fix Git Push Rejected: Non-Fast-Forward Merge
You run git push and get: ! [rejected] main -> main (non-fast-forward)
Software troubleshooting desk

You run git push and get: ! [rejected] main -> main (non-fast-forward)

You run git merge and get an error: fatal: refusing to merge unrelated histories...

If you see fatal: Unable to create 'path/.git/index.lock': File exists. when...

You run pip install and see errors like “package A requires package B==1.0 but y...

You're running a Python script and suddenly see:
UnicodeDecodeError: 'utf-8' ...

You try to sync your Microsoft Edge data—bookmarks, passwords, settings—but get error 0x80070424....