![[syndicated profile]](https://www.dreamwidth.org/img/silk/identity/feed.png){kind=small}
wordpresstrac_feed
Thanks for the report, we're already tracking this in #64347
wordpresstrac_feed
The export process throws an error related to the wxr_cdata() function.
The problem happens because the function is called with values that are not always strings — sometimes a meta value is null or another type. When that happens, the function breaks during export.
[
![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
04-Dec-2025 07:13:56 UTC] PHP Fatal error: Uncaught TypeError: wp_is_valid_utf8(): Argument #1 ($bytes) must be of type string, null given, called in /Users/radiustheme07/Local Sites/shopbuilder/app/public/wp-admin/includes/export.php on line 246 and defined in /Users/radiustheme07/Local Sites/shopbuilder/app/public/wp-includes/utf8.php:39
Stack trace:
#0 /Users/radiustheme07/Local Sites/shopbuilder/app/public/wp-admin/includes/export.php(246): wp_is_valid_utf8(NULL)
#1 /Users/radiustheme07/Local Sites/shopbuilder/app/public/wp-admin/includes/export.php(682): wxr_cdata(NULL)
#2 /Users/radiustheme07/Local Sites/shopbuilder/app/public/wp-admin/export.php(123): export_wp(Array)
#3 {main}
thrown in /Users/radiustheme07/Local Sites/shopbuilder/app/public/wp-includes/utf8.php on line 39
To fix it, WordPress should add a simple type check before processing the value. For example:
<?php function wxr_cdata( $str ) { // Make sure the value is a string before processing. if ( ! is_string( $str ) ) { return '<![CDATA[]]>'; // Fail-safe output for invalid or null values. } if ( ! wp_is_valid_utf8( $str ) ) { $str = utf8_encode( $str ); } $str = '<![CDATA[' . str_replace( ']]>', ']]]]><![CDATA[>', $str ) . ']]>'; return $str; }
wordpresstrac_feed
In 61350: