Wordpress WordPress: Failed to Load Plugin URL

Centmin Mod values security and puts additional measures in place so that end users are also mindful of security. So in your case, you might need to whitelist or unblock the WP plugins related to your 403 permission denied messages.

If you used centmin.sh menu option 22 auto installer Wordpress Nginx Auto Installer, the default wpsecure conf file at /usr/local/nginx/conf/wpincludes/${vhostname}/wpsecure_${vhostname}.conf where vhostname is your domain name, blocks php scripts from executing in wp-content for security

Below links you can see examples of setting up specific wordpress location matches to punch a hole in the wpsecure blocking to whitelist specific php files that need to be able to run.

• Problem with timthumb security
• Wordpress - need help for woocommerce plugin
• Wordpress - Visual editor missing
• Wordpress - Social login plugin trouble
• Wordpress - Social login plugin trouble

If on Centmin Mod 123.09beta01, you may have ran into the new tools/autoprotect.sh cronjob feature outlined at Beta Branch - autoprotect.sh - apache .htaccess check & migration to nginx deny all | Centmin Mod Community You uploaded scripts may have .htaccess deny from all type files in their directories which may need bypassing autoprotect. It's a security feature that no other nginx based stack has as far as I know

So instead, all .htaccess 'deny from all' detected directories now get auto generated Nginx equivalent location match and deny all setups except if you want to manually bypass the directory from auto protection via a .autoprotect-bypass file - details below here.

You can read a few threads below on how autoprotect.sh may have caught some folks web apps falsely and the workarounds or improvements made to autoprotect.sh with the help of users feedback and troubleshooting.

• Is it better to add an exeption for 127.0.0.1 for autoprotect rules? | Centmin Mod Community
• IP.Board - Query on autoprotect + IPB forums | Centmin Mod Community
• Wordpress - Akismet JS and CSS - Forbidden? | Centmin Mod Community
• Nginx - Error 403 nginx with sngine script
• Wordpress - Wordpress Plugins 403 errors when plugin opens ZIP / txt file download

 

is the plugin directory listed in /usr/local/nginx/conf/autoprotect/domain.com/autoprotect-domain.com.conf as a location context match ? if so that means tools/autoprotect.sh issue so can setup a bypass file to skip including it in that include file as outlined at Beta Branch - autoprotect.sh - apache .htaccess check & migration to nginx deny all

if isn't included in /usr/local/nginx/conf/autoprotect/domain.com/autoprotect-domain.com.conf, then it's related to the default wpsecure conf file at /usr/local/nginx/conf/wpincludes/${vhostname}/wpsecure_${vhostname}.conf where vhostname is your domain name, blocks php scripts from executing in wp-content for security

Below links you can see examples of setting up specific wordpress location matches to punch a hole in the wpsecure blocking to whitelist specific php files that need to be able to run.

• Problem with timthumb security
• Wordpress - need help for woocommerce plugin
• Wordpress - Visual editor missing
• Wordpress - Social login plugin trouble
• Wordpress - Social login plugin trouble

 

That's it. Yup fine grain security and control over what wordpress plugins you decide to allow at it's best

 

did you restart both nginx and php-fpm services after making changes ?

what specific frontend issues ? if you check nginx access.log and error.log logs for further clues as other urls might be blocked