I have an error called "The markup in the document following the root element must be well-formed.",can you tell me how to solve it?

The error "The markup in the document following the root element must be well-formed" usually occurs when there is some invalid syntax in your XML document.

To solve this error, you can check your XML document for any missing tags, incorrect character encoding, or other syntax errors. Use a reliable XML editor to check and validate your document. You can also use an online XML validator to check the syntax of your document.

Overall, it is essential to ensure that your XML document follows the strict rules for a well-formed document to prevent such errors from occurring.