Why show me Error in card view extension . please guide me

I haven’t used this extension yet
But I think problem is with last block
Overlay height

You are not using Kodular but another distribution of App Inventor. Please ask in their forum, not here.

I am using kodular community Extension.

Your blocks are not from Kodular. You are using a Kodular extension - the developer may not guarantee that the extension work on other derivatives. Contact the extension developer privately, because this is Kodular community.

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