Answer / guest

Cause: In a name such as "A.B", "A" is the qualifier, and
"B" is a component of the qualifier. This error occurs when
no declaration for the qualifier is found.The qualifier
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 qualifier.
Also confirm that the declaration is placed correctly in the
block structure.

Please add more information about this Error

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