No duplicate names. You see the problem here? https://i.imgur.com/SRmGdc3.png
✓ ANSWER ACCEPTED
[SOLVED] Animation not working because of duplicate names, but there are no duplicate names. (?)
2 answers
✓ Accepted answer
You have 2 parts named "Union3." Did you mean to name one "Union1"?
Two parts are named Union3, this is likely causing the error.
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1 comment
there are 2 (Union3)s