Attempt to invoke virtual method error

How to Solve this error

Can you show your blocks?

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Br0 in my project 3000+ blocks not possible to show :roll_eyes:

Okay, so how can we help you, when you don’t know anything about your code :sweat_smile: , so , at least show as the blocks of the part that the error happens at.

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After change this block then occurred this error

Are you sure the dynamic label with that ids are created beforehand?
I am asking this because this type of error generally occurs when you try to set the property of any component which is not present/created

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