500 Internal Server Error (Apache)

Hi,

I’m experiencing a redirect-loop issue only on the EN language pages when the Trustindex plugin is enabled, and I’d like to confirm whether this is a known conflict with WPML.

Error details (from Apache):

AH00124: Request exceeded the limit of 10 internal redirects
AH00121: r->uri = /en/index.php
(x10) AH00122: redirected from r->uri = /en/index.php

This happens exclusively on EN (the second language).
The root .htaccess is clean and contains only standard WordPress / security / cache rules.
There is no .htaccess inside /en/, and I also tested with the default WordPress .htaccess, but the loop still occurs as soon as Trustindex is active. I can’t find any rule related to /en/index.php.

I also excluded the loader.js from my cache plugin (SpeedyCache), but the internal redirect loop remains.

It appears that something triggers a rewrite from any EN page (e.g., /en/contact/) to /en/index.php, and then /en/index.php internally redirects back to itself repeatedly. This does not happen when Trustindex is disabled.

Can you advise if there’s any known incompatibility between Trustindex and WPML that could cause EN pages to be rewritten to /en/index.php in a loop, or if there’s a recommended configuration to prevent this redirect?