WordPress Health check reports: 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 error seems to be that the "session_start()" in class-billmate-cardpay.php isn't closed. When session_write_close() is added to the end of the file the error disappears.
WordPress Health check reports: 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 error seems to be that the "session_start()" in class-billmate-cardpay.php isn't closed. When session_write_close() is added to the end of the file the error disappears.