Error: The prefix “tools” for attribute “tools:overrideLibrary” associated with an element type “uses-sdk” is not bound

Question

I got the following error while build apk file from unity on mac osx sierra. this also build fine before I reboot my macbook, but not now.

I\'ve added error details belo

Answer 1

Problem is usually caused by a plugin. Find AndroidManifest.xml from the plugin in your project, open it and then add xmlns:tools="http://schemas.android.com/tools" under <manifest xmlns:android="http://schemas.android.com/apk/res/android".

Save it and rebuilt again. This should solve the problem. You can see what it should like from this post.