Php 8 is not compatible with the enfold event module

Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function “example_callback” not found or invalid function name in /chroot/home/a6dab50d/mokshayoga.com.au/html/wp-includes/class-wp-hook.php:307 Stack trace: #0 /chroot/home/a6dab50d/mokshayoga.com.au/html/wp-includes/plugin.php(191): WP_Hook->apply_filters(”, Array) #1 /chroot/home/a6dab50d/mokshayoga.com.au/html/wp-content/themes/enfold/config-templatebuilder/avia-shortcodes/events_upcoming/events_upcoming.php(424): apply_filters(‘avf_upcoming_ev…’, ”, Object(WP_Post)) #2 /chroot/home/a6dab50d/mokshayoga.com.au/html/wp-content/themes/enfold/config-templatebuilder/avia-template-builder/php/class-shortcode-template.php(1311): avia_sc_upcoming_events->shortcode_handler(Array, ”, ‘av_upcoming_eve…’, Array) #3 /chroot/home/a6dab50d/mokshayoga.com.au/html/wp-includes/shortcodes.php(356): aviaShortcodeTemplate->shortcode_handler_prepare(Array, ”, ‘av_upcoming_eve…’) #4 [internal function]: do_shortcode_tag(Array) #5 /chroot/home/a6dab50d/mokshayoga.com.au/html/wp-includes/shortcodes.php(228): preg_replace_callback(‘/\[(\[?)(av_upc…’, ‘do_shortcode_ta…’, ‘
n[av_head…’) #6