An active PHP session was detected

A critical error has appeared in the Site Tools section: A PHP session was created by a session_start() function call. This interferes with REST API and loopback requests. The session should be closed by session_write_close() before making any HTTP requests.

The cause turned out to be this plugin, namely the code in the file plugin/premmerce/src/admin/admin.php.
If you change this code

if ( !session_id() ) {
session_start();
}

to this,

        if ( !session_id() ) {
            session_start(['read_and_close' => true]);
        }

the error disappears.

Have a good day everyone.

• This topic was modified 3 months ago by olessol.