My APK won't build in Distribution

I still have nothing, this is super frustrating, no idea what to do. Not sure why is looking for a Z:\ directory and the whole proguard":

"[proguard] Warning: can’t write resource [META-INF/MANIFEST.MF] (Duplicate zip entry [classes.jar:META-INF/MANIFEST.MF])

Is baffling me as well.

(Thank you for being so patient with me)