Hello,
 
Have you tried with Tortoise Git tool?
This is a nice tool to handle externally conflicts, commits and also git issues.
 
I have never had this error before but I am positive with Tortoise Git you can resolve it.
Try these steps:
 
Steps to Fix the Issue Using TortoiseGit
	- 
	
Ensure Git is initialized:
	
		- Right-click on your project folder.
 
		- Select TortoiseGit → Check for modifications.
 
		- If Git is not initialized, you need to do that first (explained below).
 
	
	 
	- 
	
Make an Initial Commit:
	
		- Right-click the project folder.
 
		- Select TortoiseGit → Commit...
 
		- In the commit window, add a commit message (e.g., "Initial Commit").
 
		- Select all the files and commit them.
 
	
	 
	- 
	
Push to Remote (if required):
	
		- If you are using a remote repository (e.g., GitHub, GitLab, Bitbucket), you need to push the commit:
		
			- Right-click the project folder.
 
			- Select TortoiseGit → Push...
 
			- Choose the remote repository and push your commit.
 
		
		 
	
	 
	- 
	
Reopen Mendix Studio Pro:
	
		- Now that your repository has at least one commit, try opening the project in Mendix Studio Pro again.
 
	
	 
Let me know in case you resolved it :)
 
Best,
Fjordi