This usually happens when the rebase process is left in an unfinished state. Mendix still thinks a rebase is ongoing, so it blocks both commit and new rebase actions.

From your screenshot, it looks like the rebase was started but not properly completed. Even if you resolved the conflicts, Mendix still expects you to either finish or cancel the rebase.

The first thing you should try is using the options in the top bar. Click Commit to continue and complete the rebase, or click Abort Rebase to cancel it and return to the previous state.

If that does not work, your local Git state is likely stuck. In that case, close Mendix Studio Pro and go to your project folder. Inside the .git folder (which could be hidden), delete the rebase-merge and rebase-apply folders if they exist. Then reopen the project and try again.

If the issue still persists, the cleanest solution is to reset your local environment. Make sure to back up your changes first, then delete the local project folder and download the project again from the Team Server, and restore your backup.

If this resolves your issue, please mark it as accepted.