I’ve tried to enable debugging and there is an error related to the plugin in my logs:
session_start(): Cannot start session when headers already sent Line : 17 /home/utfqiwixdy/domains/xyz.com/public_html/wp-content/plugins/metform/base/shortcode.php
I also get the related performance warning in tools/site health:
An active PHP session was detected
APHP 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.
