When my son goes to open the game it gives us this error:

Error Unable to delete corrupted file.  Pasted the more details below along with screenshots underneath.  He had just recently bought the game on this computer and was playing it fine and then accidentally deleted a couple worlds he didn't mean to and his mom and brother tried to see if they could find/fix them unsuccessfully.  Then the game wouldn't work and we've tried uninstalling and reinstalling multiple times but get this error every time now and are lost as to what to do.

Unable to delete a corrupt file.
URL: https://launchermeta.mojang.com/v1/packages/c3f2bebb4a5fd3f2f3ee0783efa46bf23089c218/1.14.json
Error details: File hash should be c3f2bebb4a5fd3f2f3ee0783efa46bf23089c218 but was 5266701e794a3cfb26c8052800c1bca81ef0ab5c
Access is denied.

Filename on disk: 1.14.json
Path: C:\Users\STEVE\AppData\Roaming\.minecraft\assets\indexes\1.14.json
Exists: file