laszlogo

Hello @vmarko,

Now your question is clear, yes it was in de W3TC block, to be more specific in between the #BEGIN W3TC Browser Cache and #END W3TC Browser Cache tags, all the way at the end.
Here is the entire piece in between a IfModule check:

<IfModule mod_headers.c>
    Header always set Strict-Transport-Security "max-age=31536000"
    Header set X-XSS-Protection "1; mode=block"
    Header set X-Content-Type-Options "nosniff"
    Header set Public-Key-Pins "pin-sha256="$pin"; pin-sha256="$pinbak"; max-age=31536000"
    Header set Referrer-Policy "no-referrer-when-downgrade"
</IfModule>

We have a back-up service, where i noticed it was written differently, without breaking:

<IfModule mod_headers.c>
    Header always set Strict-Transport-Security "max-age=31536000"
    Header set X-XSS-Protection "1; mode=block"
    Header set X-Content-Type-Options "nosniff"
    Header set Public-Key-Pins "pin-sha256=\"\"; pin-sha256=\"\"; max-age=31536000"
    Header set Referrer-Policy "no-referrer-when-downgrade"
</IfModule>

Hope this clears the air and gives enough info to debug the situation and come with a solution/fix!

• This reply was modified 6 months, 1 week ago by laszlogo.

Hello Ewout,

Thanks for your quick reply.
I tried to put the filter inside a muplugins_loaded action, but no succes:

add_action('muplugins_loaded', 'custom_muplugins_loaded', 10);

function custom_muplugins_loaded()
{
   add_filter('plugin_locale', function($locale, $textdomain) {
      if($textdomain == 'woocommerce-pdf-invoices-packing-slips') {
         $locale = 'de_DE';
      }
      
      return $locale;
   }, 10, 2);
}

You don’t by any change have a working example on how the change the locale of the packingslip PDF?