Wikitude

Error message in layout xml in android

Can you help me guys. Whenever i put this this line in my xml, it gives an error:

<com.wikitude.architect.ArchitectView
android:layout_width="match_parent"
android:layout_height="match_parent">

</com.wikitude.architect.ArchitectView>

and the error is in this image:

PS: Im new in this sdk :)