Error getting in horizontal scroll arrangement handeler extension

I am getting this error any solution ?

Blocks

Error

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@Anil please share the blocks from Niotron

Same block Niotron, app Inventor,modular, thuncable, only block colour change

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Ya! I know, but providing the screenshot of blocks from Niotron only will be better

I have flagged this post

Which post are you talking about?

The above posted one