", line 1, in NameError: name 'sheet' is ...">

Traceback (most recent call last): File "", line 1, in NameError: name 'sheet' is ...

This error message is indicating that there is no variable or object defined in the current scope with the name "sheet".

This could happen if you are trying to access or manipulate a variable that has not been defined in your code or has gone out of scope. It could also happen if there is a typo i

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