Discord action Add Role to User - missing permissions

Hi,
I managed to make the bot work on the “Add User Role” by putting the BOT on top of everyone in the Roles sections of the Server Settings (a friend gave me this tip), but for that to work, I had to know the User ID and add to the Sheets myself, which I can’t to automatically (that’s the whole point of this automation). I tried to List Guild Members to maybe get the ID from the user registration email, but it didn’t work. Can you help me with this error to list Guild members?

Thanks
D