Uncaught Error: Cannot use string offset as an array

Hello

In admin I can’t edit cpntent, advanced builder in only loading, this is what is sais…

Fatal error: Uncaught Error: Cannot use string offset as an array in /home/vilasumica/public_html/wp-content/themes/enfold/config-templatebuilder/avia-template-builder/php/shortcode-template.class.php:489 Stack trace: #0 /home/vilasumica/public_html/wp-content/themes/enfold/config-templatebuilder/avia-template-builder/php/shortcode-template.class.php(443): aviaShortcodeTemplate->create_sortable_editor_element(Array) #1 /home/vilasumica/public_html/wp-content/themes/enfold/config-templatebuilder/avia-template-builder/php/template-builder.class.php(397): aviaShortcodeTemplate->prepare_editor_element() #2 /home/vilasumica/public_html/wp-includes/class-wp-hook.php(308): AviaBuilder->js_template_editor_elements(”) #3 /home/vilasumica/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(”, Array) #4 /home/vilasumica/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #5 /home/vilasumica/public_html/wp-includes/media-template.php(1555): do_action(‘print_media_tem…’) #6 /home/vilasumica/public in /home/vilasumica/public_html/wp-content/themes/enfold/config-templatebuilder/avia-template-builder/php/shortcode-template.class.php on line 489

For any info I would be very happy
Thank you