Issue with loopback requests

Hi @softfully ,

I hope you’re doing well.

We need you to check a few things here in this case, possibly with your Hosting Support.

Could you please check this and let us know if it helps? https://wpmudev.com/docs/wpmu-dev-plugins/smush/#loopback-request-issue

I hope to hear back from you soon.
Best Regards,
Williams Valerio

Hi @softfully

Thank you for the update.

I understand the previous version was working well but we still need to run some tests to understand why the current one isn’t, with that then we can look into specific scenario and try to replicate the issue.

Could you add the below code as a mu-plugin https://wpmudev.com/docs/using-wordpress/installing-wordpress-plugins/#installing-mu-plugins

<?php

add_action( 'init', function(){
	if( isset( $_GET['wpmudev-test-loopback'] ) ){
		echo '<pre>';

		$response = wp_remote_get( get_site_url() );

		print_r( $response );
		exit;
	}
} );

Then access the home page using yoursite/?wpmudev-test-loopback, take a screenshot and share it with us.

Could you also try to flush all the browser cookies, https://www.hellotech.com/guide/for/how-to-clear-cookies-chrome-safari-mozilla-firefox-edge and log in back to WordPress and see if makes any difference? We had a case in the past of one of Cookies causing the loopback but it was related to a 3rd party cookie.

Let us know the result you get.
Best Regards
Patrick Freitas

Hello @softfully

Thank you for sharing the test results.

The test doesn’t show any errors however the issue might be related to a security plugin or your hosting firewall, could you please try temporarily disabling your security plugin to see how it works?

If that wasn’t helpful, please install WP Crontrol plugin and go to tools -> cron events and look for any errors.
https://ww.wp.xz.cn/plugins/wp-crontrol/

Kind Regards
Amin

Hello @softfully

We already ran lots of tests using the latest version on our end, but could not notice issue, also since we don’t have any similar reports that suggest the issue is isolated to your site.

For testing purposes, you can download the previous version from the following and go to wp-admin -> plugins -> add plugin and upload the zip file, WordPress will then ask if you want to replace plugin with older versions.
https://downloads.wp.xz.cn/plugin/wp-smushit.3.18.0.zip

Please let us know how it works and if you are still having issues its better to run a full conflict test.
https://wpmudev.com/docs/getting-started/getting-support/#conflict-test

Kind Regards
Amin