<span style="color:#323232;">sudo echo "# FYI quotes(") must be escaped with like "
</span>
👆 that is not a comment. That is a command that says to echo the text “# FYI quotes(” and then to do ) must be escaped like " which is invalid syntax.
I assume that startup script is reading the contents of the file and trying to echo them into another file? i.e., using the original file as a template, but is not escaping the input, hence the error — which you’re lucky that’s the problem you’re encountering and not something actually destructive like sudo echo “# foo” && rm -rf /*.