Answer / guest

Cause: A block or loop label was used to qualify a variable
(as in outer_block.date) that was not declared or is not
within the scope of the label. The variable name might be
misspelled, its declaration might be faulty, or the
declaration might be placed incorrectly in the block structure.

Action: Check the spelling and declaration of the variable
name. Also confirm that the declaration is placed correctly
in the block structure.

Please add more information about this Error

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