PDF viewer extension not working

Discussion
1

the pdf viewer extension is not working, saying argument is neither Class nor Type. how to solve it?
here is the link to community post of this extension [Free] PDF Viewer Extension - An In App PDF Renderer and Viewer - Extensions - MIT App Inventor Community

2

Why don’t you ask in this topic in app inventor we are here in Android builder, not create a new topic

So the developer of the extension can reply .

3

Thank you for the suggestion.

I just wanted to clarify that the PDF Viewer extension works fine in MIT App Inventor (AI2), but I encountered an issue when trying to use it in Android Builder. Since the problem is specific to Android Builder, I thought it would be more appropriate to ask here, as the behavior might differ between platforms.

I appreciate any insights from the community or suggestions on how to resolve the “argument is neither Class nor Type” error in Android Builder.

Thanks again for your support.