If anyone else is having this error when trying to use UnrealObjectPtrTool.exe:
[2022.06.01-02.56.58:635][ 0]LogWindows: Warning: CreateProc failed: The system cannot find the file specified. (0x00000002)
I created a project on GitHub as an alternative, it looks like the Unreal Engine version uses Perforce ( p4 command ).
It could also be a problem that I’m not using the c: drive.
I hope it helps!