i have error "An internal error has occured. Report a bug

Please i need help when i move ot bloks to desiger i had this msg
"An internal error has occured. Report a bug
this is my aia file
newapp.aia (88.2 KB)

First, welcome to the community.
Please elaborate more on

Secondly, there usually some errors in your blocks or designer have occurred.
I usually just click on cancel and check if there are any errors.

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