What does the error message "xml.parsers.expat.ExpatError" signify when parsing XML?

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The error message "xml.parsers.expat.ExpatError" signifies that there is an error in parsing an XML file with the Expat parser. Expat is a widely used XML parser used in many programming languages like Python, C++, and Java. The error can occur due to various reasons, such as incorrectly formatted XML syntax, missing or incorrect attributes, or invalid character encodings. The specific error message would provide more information about the cause of the error.