Quiz Unit 4 launch error

I have some problems with this error when I try to launch it.

RLException: Invalid roslaunch XML syntax: not well-formed (invalid token): line 1, column 1
The traceback for the exception was written to the log file

Hi @pepemarques01, welcome to the community!

That error means that you have missed an XML character in the first line, first column of your launch file. Check the syntax carefully and try again

Thanks, I appreciated it @roalgoal . I still have the issue i tried to delete the launch file, then create it again but still not working, don´t know what I´m doing wrong.(happened to me two times and i was able to solve it myself, but now i can´t) The code seems good.

Exactly the code is:

Check the way you are trying to launch the topics_quiz.launch in your terminal. The syntax is incorrect

yeah, after two hours yesterday i could think of it and realize that i was writing in the terminal the incorrect file haha