Can not edit place in Enfold Theme

Hello,

I can not edit place and I am getting this fatal error using Enfold Theme by Kriesi. All other plugins are desactivated.

What can I do now?

Fatal error: Uncaught TypeError: Argument 1 passed to AviaBuilder::handler_wp_dbx_post_sidebar() must be an instance of WP_Post, instance of stdClass given, called in /www/htdocs/my-website/wp-includes/class-wp-hook.php on line 286 and defined in /www/htdocs/my-website/wp-content/themes/enfold/config-templatebuilder/avia-template-builder/php/template-builder.class.php:320 Stack trace: #0 /www/htdocs/my-website/wp-includes/class-wp-hook.php(286): AviaBuilder->handler_wp_dbx_post_sidebar(Object(stdClass)) #1 /www/htdocs/my-website/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(”, Array) #2 /www/htdocs/my-website/wp-includes/plugin.php(453): WP_Hook->do_action(Array) #3 /www/htdocs/my-website/wp-admin/edit-form-advanced.php(750): do_action(‘dbx_post_sideba…’, Object(stdClass)) #4 /www/htdocs/my-website/wp-admin/post.php(174) in /www/htdocs/my-website/wp-content/themes/enfold/config-templatebuilder/avia-template-builder/php/template-builder.class.php on line 320

Best regards
Rolf