After completing my tribute page on FreeCodeCamp’s workspace, I saved it to my desktop, it saved a a .txt file. However, upon opening the file, I found that most of the code had been replaced with the text: “** end of undefined ** ** start of undefined **”. What could have caused this issue?

I expected my code to appear exactly as it was displayed in my freecodecamp workspace, instead most of the code has been replaced by this undefined text.