Title: Error with mb_convert_encoding
Last modified: July 10, 2021

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# Error with mb_convert_encoding

 *  [dulich5](https://wordpress.org/support/users/dulich5/)
 * (@dulich5)
 * [4 years, 9 months ago](https://wordpress.org/support/topic/error-with-mb_convert_encoding/)
 * Dear Support,
    I installed Auto Featured Image (Auto Post Thumbnail) to my site.
   And it notices: ——————– `Fatal error: Uncaught Error: Call to undefined function
   WBCR\APT\mb_convert_encoding() in /home/okelatour/danhngoncuocsong.com/wp-content/
   plugins/auto-post-thumbnail/includes/class-wapt-image.php:310 Stack trace: #0/
   home/okelatour/danhngoncuocsong.com/wp-content/plugins/auto-post-thumbnail/includes/
   class-apt.php(1167): WBCR\APT\Image->write_text('"Trong cu\xE1\xBB\x99c s...','','','','
   center', 'center', '1.5', '') #1 /home/okelatour/danhngoncuocsong.com/wp-content/
   plugins/auto-post-thumbnail/includes/class-apt.php(1214): WBCR\APT\AutoPostThumbnails::
   generate_image_with_text('"Trong cu\xE1\xBB\x99c s...', '/home/okelatour...','
   jpg') #2 /home/okelatour/danhngoncuocsong.com/wp-content/plugins/auto-post-thumbnail/
   includes/class-apt.php(452): WBCR\APT\AutoPostThumbnails->generate_and_attachment(
   51) #3 /home/okelatour/danhngoncuocsong.com/wp-content/plugins/auto-post-thumbnail/
   includes/class-wapt-plugin.php(386): WBCR\APT\AutoPostThumbnails->publish_post(
   51) #4 /home/okelatour/danhngoncuocsong.com/wp-includes/class-wp-hoo in /home/
   okelatour/danhngoncuocsong.com/wp-content/plugins/auto-post-thumbnail/includes/
   class-wapt-image.php on line 310`
 * —————-
    Pls help me how to solve this. Thank you.

Viewing 1 replies (of 1 total)

 *  [Temyk](https://wordpress.org/support/users/webtemyk/)
 * (@webtemyk)
 * [4 years, 9 months ago](https://wordpress.org/support/topic/error-with-mb_convert_encoding/#post-14649620)
 * Hello.
 * For this function to work, the mbstring extension must be enabled in the PHP 
   config

Viewing 1 replies (of 1 total)

The topic ‘Error with mb_convert_encoding’ is closed to new replies.

 * ![](https://ps.w.org/auto-post-thumbnail/assets/icon-256x256.gif?rev=3469511)
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 * 1 reply
 * 2 participants
 * Last reply from: [Temyk](https://wordpress.org/support/users/webtemyk/)
 * Last activity: [4 years, 9 months ago](https://wordpress.org/support/topic/error-with-mb_convert_encoding/#post-14649620)
 * Status: not resolved