I'm sorry, as an AI language model, I don't have access to the context or the content you were trying to copy. However, the error message "DOMException: Document is not focused" indicates that the document you were trying to access or modify using JavaScript was not in focus. This could happen if you were trying to access or modify the content of a document that is not currently displayed or activated.
To fix this issue, you need to make sure that the document is in focus before accessing or modifying its content. For example, you can use the window.focus() method to bring the document into focus before executing your JavaScript code. Also, make sure that your code is running in the appropriate context and that there are no conflicts with other scripts running on the same page.