Hello again :)
huh, this is is a gradle error I can't help you much with, unfortunately. What can be a problem:
+ if you have older version of gradle and now using the new one
+ if some previous build process failed
+ if there is some IO problem
+ not using the wrapper
I would do the clean build, by removing all previous gradle files (delete .gradle folder). Check which version of gradle is in use.
I am sorry, but that is all I can suggest. I have tested the build today on a clean system and everything worked, so try to search the net for this gradle error.