How to Solve this error
Can you show your blocks?
Br0 in my project 3000+ blocks not possible to show
Okay, so how can we help you, when you don’t know anything about your code , so , at least show as the blocks of the part that the error happens at.
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