Check all the dependencies, whether they are valid or not.
Or for a temporary fix, try offline mode.
To enable this setting go to: Preferences -> Gradle In the right side options go down to "Global Gradle Settings" and check the "Offline work" box.
Build from the command line to know the exact source of the problem
chmod +x gradlew ./gradlew assembleDebug
- If nothing works, You can also try to delete all contents of folder C:\Users\