https://www.google.com/search?q=adb%3A+error%3A+failed+to+copy+permission+denied&oq=adb%3A+error%3A+failed+to+copy+permission+denied&aqs=chrome..69i57j69i58.9378j0j7&sourceid=chrome&ie=UTF-8
Note that you may need to root the device to do this.