Error: Path does not exist:'python'

Hi all. I downloaded a scene of sentinel2 L1C imagery through USGS earth explorer and installed Sen2Cor on SNAP. I checked the installation status in cmd and everything looks fine. However, when I tried to run Sen2Cor in SNAP, it failed and gave an error: Path does not exist: ‘python’, which confused me.
Can anyone give me some suggestions to solve it?
Thank you!

please have a look at this solution and add the full path to your python installation: