Title: WordPress Error Message PHP 8.0.7 – Breadcrumb config
Last modified: September 4, 2021

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# WordPress Error Message PHP 8.0.7 – Breadcrumb config

 *  Resolved [grobc](https://wordpress.org/support/users/grobc/)
 * (@grobc)
 * [4 years, 8 months ago](https://wordpress.org/support/topic/error-message-php-8-0-7/)
 * After I switched to PHP 8 on the development version of a websites, the following
   WordPress error occurs when I try to open the Breadcrumb NavXT configuration 
   page.
 * “There has been a critical error on your website. Please check your site admin
   email inbox for instructions.”
 * Wordpress Version: 5.8
    Site Language: de_DE Breadcrumb NavXT Version: 6.6.0
 * **debug.log:**
    _[04-Sep-2021 16:21:57 UTC] PHP Fatal error: Uncaught ValueError:
   Unknown format specifier “M” in /var/www/vhosts/…/wp-content/plugins/breadcrumb-
   navxt/class.bcn\_admin.php:329 Stack trace: #0 /var/www/vhosts/…/wp-content/plugins/
   breadcrumb-navxt/class.bcn\_admin.php(329): sprintf(‘%Melde einen Bu…’, ‘‘)
 * **When I change the user language to English, this error does not occur.**
 * Thanks
    Carsten
    -  This topic was modified 4 years, 8 months ago by [grobc](https://wordpress.org/support/users/grobc/).
    -  This topic was modified 4 years, 8 months ago by [grobc](https://wordpress.org/support/users/grobc/).
    -  This topic was modified 4 years, 8 months ago by [grobc](https://wordpress.org/support/users/grobc/).

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Plugin Author [John Havlik](https://wordpress.org/support/users/mtekk/)
 * (@mtekk)
 * [4 years, 8 months ago](https://wordpress.org/support/topic/error-message-php-8-0-7/#post-14853015)
 * Yeah, unfortunately, there is an error in the German translation, and it appears
   there aren’t any active editors for that language in the .org Breadcrumb NavXT
   translation project. I’ve submitted a correction, but it’s up to someone with
   editor rights to accept it (why plugin owners aren’t set as editors for all translation
   languages for their plugins is a little confusing but I’m sure there’s a reason).
   Even though it probably makes the code a little uglier, I probably should change
   how this works for the next release to prevent the issue in the future.
    -  This reply was modified 4 years, 8 months ago by [John Havlik](https://wordpress.org/support/users/mtekk/).
 *  Thread Starter [grobc](https://wordpress.org/support/users/grobc/)
 * (@grobc)
 * [4 years, 8 months ago](https://wordpress.org/support/topic/error-message-php-8-0-7/#post-14853565)
 * Hello John,
    Thank you for taking the time to sort it out.
 *  Plugin Author [John Havlik](https://wordpress.org/support/users/mtekk/)
 * (@mtekk)
 * [4 years, 8 months ago](https://wordpress.org/support/topic/error-message-php-8-0-7/#post-14926923)
 * To follow up on this, the offending string will not exist in 7.0.0, so it will
   be fixed going forward.
 *  [squatter1](https://wordpress.org/support/users/squatter1/)
 * (@squatter1)
 * [4 years, 7 months ago](https://wordpress.org/support/topic/error-message-php-8-0-7/#post-14966591)
 * Hi, I can confirm that this bug is also present in Czech translation of WordPress…

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘WordPress Error Message PHP 8.0.7 – Breadcrumb config’ is closed to new
replies.

 * ![](https://ps.w.org/breadcrumb-navxt/assets/icon.svg?rev=1927103)
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 * 4 replies
 * 3 participants
 * Last reply from: [squatter1](https://wordpress.org/support/users/squatter1/)
 * Last activity: [4 years, 7 months ago](https://wordpress.org/support/topic/error-message-php-8-0-7/#post-14966591)
 * Status: resolved