The error message may be a little misleading, but the issue is that you are trying to reassign values directly to a read-only variable here. As these are references to HTML elements, you can use the innerText method to change their content. If you fix these two lines, your code should pass:
@Zen.okiki
It is great that you solved the challenge, but instead of posting your full working solution, it is best to stay focused on answering the original poster’s question(s) and help guide them with hints and suggestions to solve their own issues with the challenge.
We are trying to cut back on the number of spoiler solutions found on the forum and instead focus on helping other campers with their questions and definitely not posting full working solutions.