PHP 8: Smash Balloon or Genesis?

Hi. I have a site generated this error after upgrading to PHP 8 from 7.4. The site is using Genesis framework, which I see sidebar code here. So I wonder if your plugin is compatible with PHP 8? Or this is something that Genesis needs to fix in their sidebar code? Thank you.

[Thu Jul 06 15:27:11.021688 2023] [lsapi:error] [pid 193063:tid 139995490789120] [client client-IP-address:0] [host mydomain.com] Backend fatal error: PHP Fatal error:  Uncaught TypeError: base64_decode(): Argument #1 ($string) must be of type string, array given in /home/hostingusername/domains/mydomain.com/public_html/wp-content/plugins/custom-facebook-feed/inc/SB_Facebook_Data_Encryption.php:99\nStack trace:\n#0 /home/hostingusername/domains/mydomain.com/public_html/wp-content/plugins/custom-facebook-feed/inc/SB_Facebook_Data_Encryption.php(99): base64_decode()\n#1 /home/hostingusername/domains/mydomain.com/public_html/wp-content/plugins/custom-facebook-feed/inc/CFF_Shortcode.php(1846): CustomFacebookFeed\\SB_Facebook_Data_Encryption->decrypt()\n#2 /home/hostingusername/domains/mydomain.com/public_html/wp-content/plugins/custom-facebook-feed/inc/CFF_Shortcode.php(298): CustomFacebookFeed\\CFF_Shortcode->get_settings_for_feed()\n#3 /home/hostingusername/domains/mydomain.com/public_html/wp-includes/shortcodes.php(355): CustomFacebookFeed\\CFF_Shortcode->display_cff()\n#4 [internal function]: do_shortcode_tag()\n#5 /home/hostingusername/domains/mydomain.com/public_html/wp-includes/shortcodes.php(227): preg_replace_callback()\n#6 /home/hostingusername/domains/mydomain.com/public_html/wp-includes/class-wp-hook.php(310): do_shortcode()\n#7 /home/hostingusername/domains/mydomain.com/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters()\n#8 /home/hostingusername/domains/mydomain.com/public_html/wp-includes/widgets/class-wp-widget-text.php(281): apply_filters()\n#9 /home/hostingusername/domains/mydomain.com/public_html/wp-includes/class-wp-widget.php(394): WP_Widget_Text->widget()\n#10 /home/hostingusername/domains/mydomain.com/public_html/wp-includes/widgets.php(835): WP_Widget->display_callback()\n#11 /home/hostingusername/domains/mydomain.com/public_html/wp-content/themes/genesis/lib/structure/sidebar.php(24): dynamic_sidebar()\n#12 /home/hostingusername/domains/mydomain.com/public_html/wp-includes/class-wp-hook.php(308): genesis_do_sidebar()\n#13 /home/hostingusername/domains/mydomain.com/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters()\n#14 /home/hostingusername/domains/mydomain.com/public_html/wp-includes/plugin.php(517): WP_Hook->do_action()\n#15 /home/hostingusername/domains/mydomain.com/public_html/wp-content/themes/genesis/sidebar.php(34): do_action()\n#16 /home/hostingusername/domains/mydomain.com/public_html/wp-includes/template.php(783): require_once('/home/hostingusername/dom...')\n#17 /home/hostingusername/domains/mydomain.com/public_html/wp-includes/template.php(718): load_template()\n#18 /home/hostingusername/domains/mydomain.com/public_html/wp-includes/general-template.php(136): locate_template()\n#19 /home/hostingusername/domains/mydomain.com/public_html/wp-content/themes/genesis/lib/structure/layout.php(333): get_sidebar()\n#20 /home/hostingusername/domains/mydomain.com/public_html/wp-includes/class-wp-hook.php(308): genesis_get_sidebar()\n#21 /home/hostingusername/domains/mydomain.com/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters()\n#22 /home/hostingusername/domains/mydomain.com/public_html/wp-includes/plugin.php(517): WP_Hook->do_action()\n#23 /home/hostingusername/domains/mydomain.com/public_html/wp-content/themes/genesis/lib/framework.php(87): do_action()\n#24 /home/hostingusername/domains/mydomain.com/public_html/wp-content/themes/genesis/index.php(15): genesis()\n#25 /home/hostingusername/domains/mydomain.com/public_html/wp-includes/template-loader.php(106): include('/home/hostingusername/dom...')\n#26 /home/hostingusername/domains/mydomain.com/public_html/wp-blog-header.php(19): require_once('/home/hostingusername/dom...')\n#27 /home/hostingusername/domains/mydomain.com/public_html/index.php(17): require('/home/hostingusername/dom...')\n#28 {main}\n  thrown in /home/hostingusername/domains/mydomain.com/public_html/wp-content/plugins/custom-facebook-feed/inc/SB_Facebook_Data_Encryption.php on line 99\n