How to get rid of a 'Failed to open discriptor file' error

I have recently purchased PUBG and whenever I try and play it, an error message pops up saying " Failed to open descriptor file ‘…/…/TslGame.uproject’. I have been searching on the web for awhile and could not find anything. I have tried validating the files but it did not work, i have also uninstalled and reinstalled but it keeps coming up with the same error.
Please post anything you think will help. Thanks.

Try typing in CDM into your search bar on windows, then typing sfc/scannow and your PC will analyse and restart itself. I’ve tried this but it says I need to be an administrator before I use the sfc unit. It didn’t work for me but you should try.