Fatal error: buttonrow

Hi,
I have a problem on the pages that have this shortcode. I can’t edit the page anymore because this message is displayed directly.
Can you help me ?

Here is the error message:

Fatal error: Uncaught Error: Cannot unset string offsets in /home/clients/90d7a0d059b34dd8062fcb0d9f1ce928/sites/new2.lazwalla.com/wp-content/themes/enfold/config-templatebuilder/avia-shortcodes/buttonrow/buttonrow.php:875 Stack trace: #0 /home/clients/90d7a0d059b34dd8062fcb0d9f1ce928/sites/new2.lazwalla.com/wp-content/themes/enfold/config-templatebuilder/avia-shortcodes/buttonrow/buttonrow.php(1023): avia_sc_buttonrow->get_element_styles_item(Array) #1 /home/clients/90d7a0d059b34dd8062fcb0d9f1ce928/sites/new2.lazwalla.com/wp-includes/shortcodes.php(355): avia_sc_buttonrow->av_buttonrow_item(”, ”, ‘av_buttonrow_it…’) #2 [internal function]: do_shortcode_tag(Array) #3 /home/clients/90d7a0d059b34dd8062fcb0d9f1ce928/sites/new2.lazwalla.com/wp-includes/shortcodes.php(227): preg_replace_callback(‘/\\[(\\[?)(av_but…’, ‘do_shortcode_ta…’, ‘<br />\n[av_butt…’) #4 /home/clients/90d7a0d059b34dd8062fcb0d9f1ce928/sites/new2.lazwalla.com/wp-content/themes/enfold/config-templatebuilder/avia-template-builder/php/class-shortcod in /home/clients/90d7a0d059b34dd8062fcb0d9f1ce928/sites/new2.lazwalla.com/wp-content/themes/enfold/config-templatebuilder/avia-shortcodes/buttonrow/buttonrow.php on line 875

WordPress version 6.1.1
Thème actif : Enfold (version 5.2.1)
Extension actuelle : (version )
PHP version 7.4.33