Unity solution cannot be generated - Projeny looking for files on not existant drive

[Gravetow]

I am currently geting following error:

Traceback (most recent call last):
File "D:\Projects\Projeny\Source\mtm\util\UnityHelper.py", line 103, in runEditorFunctionRaw  
  File "D:\Projects\Projeny\Source\mtm\util\SystemHelper.py", line 57, in executeAndWait
  File "D:\Projects\Projeny\Source\mtm\util\ProcessRunner.py", line 39, in waitForProcessOrTimeout
  File "C:\Utils\Python\Python36-32\lib\subprocess.py", line 709, in __init__
  File "C:\Utils\Python\Python36-32\lib\subprocess.py", line 997, in _execute_child
FileNotFoundError: [WinError 2] The system cannot find the file specified

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "D:\Projects\Projeny\Source\mtm\util\ScriptRunner.py", line 18, in runWrapper
  File "D:\Projects\Projeny\Source\prj\main\PrjRunner.py", line 172, in _runInternal
  File "D:\Projects\Projeny\Source\prj\main\PrjRunner.py", line 112, in _runPreBuild
  File "D:\Projects\Projeny\Source\prj\main\ProjenyVisualStudioHelper.py", line 52, in updateUnitySolution
  File "D:\Projects\Projeny\Source\mtm\util\UnityHelper.py", line 50, in runEditorFunction
  File "D:\Projects\Projeny\Source\mtm\util\UnityHelper.py", line 108, in runEditorFunctionRaw
mtm.util.UnityHelper.UnityUnknownErrorException: Unknown error occurred while running Unity!

When I am running prj -clp -bf.

The problem being that I do not have a D:\ drive and I have no idea why projeny thinks I would.
I already reinstalled projeny so the problem is most likely somewhere in my project files.

Any help would be appreciated!