It was working fine until recently when I had my firewall enabled for wp-admin. and I suddenly got the error message on Wordpress. The image has been attached:
I have tested by disabling the Firewall wp-admin and it does stop the error messages on the Wordpress.
I checked the console and got this message: “unchecked runtime.lastError: Could not establish connection. Receiving end does not exist.” with the URI path: /wp-admin/tools.php?page=health-check
I tried to allow the URI path and Query String but nothing works.
Please help! Now I have no idea how to fix this issue.