Cannot use a CSV file to import speakers in my session

[vincam]

Hello,
I'm using Zoom Sessions and I'd like to import my speakers into a session via a CSV file.
I've been doing this for a long time on Zoom Webinar, but here, I can't import my CSV file (which conforms to the downloadable template and is not UTF-8 encoded, as I've seen that this can cause problems). The file contains 5 or 6 names and e-mail addresses and is 320 bytes long... but I get the message “this file exceeds the maximum size limit”.
I'm using Firefox, all my browser extensions are disconnected for the Zoom site and events.zoom.us
I don't understand. Have you ever had this problem, and what's the best way to solve it?