XML Parse Error - Extra content at the end of the document

This error message typically occurs when there is additional content or characters after the closing root element in an XML document. This can be caused by a number of things, such as a missing closing tag, or extra whitespace or line breaks at the end of the file. To fix this issue, you should check your XML document for any extra content or characters after the closing root element and remove them. You can also use a tool like an XML validator to check the document for any syntax errors.

Additionally, in PHP, you can use the libxml_use_internal_errors() function to disable libxml errors, and then use libxml_get_errors() function to get a list of errors instead of displaying them in the browser.