I did disable the option in the API-write module, and now it's working in a shell terminal when I send the above CURL command.
But when I try to use CURL in HTTPS within my PHP program,
I get this message (401) : A valid login session was not found. Please log in and try again.
I don't understand why I get this message, because :
I'm sending the Master token in the Header by calling the PHP function curl_setopt with the option CURLOPT_HTTPHEADER
I try to send the credentials (login/password) by calling the PHP function curl_setopt with the option CURLOPT_USERPWD and login/password.
I'm still having an issue with NodeBB not being about to find a profile picture I set up on my (admin) profile. It happens on Firefox or Chrome. It's hard to discern a pattern--why some actions cause the browser not to be able to load the image, while the other still can.