xml - Attribute is missing the android namespace prefix, can't find error -

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<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#ffcccccc" android:orientation="vertical" tools:context=".maindrawingactivity" >  </linearlayout>

i can't figure out what's missing... please?

it's linearlayout, not linearlayout. capitalize l.


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