Trouble with looping sounds

PsychoPy version; https://psychopy.org/download.html- dowloaded from here, it’s the beta version

Hello,

I am trying to loop sounds, and I used this tutorial : https://youtu.be/5ZDVOfGFwWI?si=HSUI1tK2q5K49y9B (Getting Started with PsychoPy (Part 2) | Loops, Variables, Online Experiments | PsychoPy Help #2), that uses images instead. I just followed the same steps but with sound. So far I made an excel file with all the sounds, calling all the sounds from the file.

Then, I tried calling them in psychopy using $aggregate_names. I also did the same thing with text, and it worked, but with audio, I get an error.

Can you please tell me how to fix this?