“Fatal error: Uncaught Error: Class ‘FLThemeBuilderLayoutData’ not found ” 5.8.8

When updating this plugin to v 5.8.8 on a site, I’m getting the following error when I try to load the front end of the site after updating the plugin. Can you help me sort this out?

Fatal error: Uncaught Error: Class ‘FLThemeBuilderLayoutData’ not found in /home/isaacsfl/public_html/wp-content/plugins/business-directory-plugin/includes/compatibility/class-beaver-themer-compat.php:20 Stack trace:

#0 /home/isaacsfl/public_html/wp-includes/class-wp-hook.php(286): WPBDP_Beaver_Themer_Compat->cornerstone_wpbdp_has_shortcode(false, Object(WP_Post), ‘businessdirecto…’)

#1 /home/isaacsfl/public_html/wp-includes/plugin.php(208): WP_Hook->apply_filters(false, Array)

#2 /home/isaacsfl/public_html/wp-content/plugins/business-directory-plugin/includes/class-wpbdp.php(275): apply_filters(‘wpbdp_has_short…’, false, Object(WP_Post), ‘businessdirecto…’)

#3 /home/isaacsfl/public_html/wp-content/plugins/business-directory-plugin/includes/class-assets.php(115): WPBDP->is_plugin_page()

#4 /home/isaacsfl/public_html/wp-includes/class-wp-hook.php(286): WPBDP__Assets->enqueue_scripts(”)

#5 /home/isaacsfl/public_html/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array)

#6 /home/isaacsfl/public_html/ in /home/isaacsfl/public_html/wp-content/plugins/business-directory-plugin/includes/compatibility/class-beaver-themer-compat.php on line 20

The site is experiencing technical difficulties.