I am struggling with the package manager of PyCharm: in many projects, after some time, it changes the name of some packages, substituting their first letter with a '-'. You can see an example of this in the image below: I needed to change the distribution of my OpenCV, and instead of 'opencv-contrib-python' package I found this '-pencv-contrib-python', which I cannot in any way modify. When this happens, I neither can update nor uninstall the module, and I need to delete the project and start it anew. Why does this happen? Is there a more practical way to solve it?