Recently updated to 2.1.7 (if I remember correctly), and my website now is now no longer accessible due to wpForo crashing.

Error in members.php:

Warning: Attempt to read property "roles" on bool in /home/user/public_html/wp-content/plugins/wpforo/classes/Members.php on line 1108

Fatal error: Uncaught Error: Attempt to assign property "roles" on bool in /home/user/public_html/wp-content/plugins/wpforo/classes/Members.php:1108 Stack trace: #0 /home/user/public_html/wp-content/plugins/wpforo/classes/Members.php(1166): wpforo\classes\Members->synchronize_user('2', Array) #1 /home/user/public_html/wp-content/plugins/wpforo/includes/installation.php(32): wpforo\classes\Members->synchronize_users(100) #2 /home/user/public_html/wp-content/plugins/wpforo/classes/Actions.php(20): wpforo_activation() #3 /home/user/public_html/wp-includes/class-wp-hook.php(308): wpforo\classes\Actions->wpforo\classes\{closure}('') #4 /home/user/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters('', Array) #5 /home/user/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #6 /home/user/public_html/wp-content/plugins/wpforo/wpforo.php(279): do_action('wpforo_after_in...') #7 /home/user/public_html/wp-content/plugins/wpforo/wpforo.php(510): wpforo\wpforo->init_classes() #8 /home/user/public_html/wp-includes/class-wp-hook.php(308): wpforo\wpforo->init(Object(WP)) #9 /home/user/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array) #10 /home/user/public_html/wp-includes/plugin.php(565): WP_Hook->do_action(Array) #11 /home/user/public_html/wp-includes/class-wp.php(797): do_action_ref_array('wp', Array) #12 /home/user/public_html/wp-includes/functions.php(1332): WP->main('') #13 /home/user/public_html/wp-blog-header.php(16): wp() #14 /home/user/public_html/index.php(17): require('/home/user/...') #15 {main} thrown in /home/user/public_html/wp-content/plugins/wpforo/classes/Members.php on line 1108

I'm running my website in 2 languages and utilize WP Multisite for that.

Interesting observation:
On one site I do not get this error (Tweaking4all.com - English language) and
on the other site it crashes my entire website (Tweaking4all.nl - Dutch language).

Both domains are on the share the same setup, running (all add-ons licensed and activated):

- Wordpress Multisite 6.1.1
- wpForo Version 2.1.7 (active)
- wpForo Ads Manager Version 3.0.2(active)
- wpForo Advanced Attachments Version 3.0.4(active)
- wpForo Embeds Version 3.0.3(active)

Any help or suggestions would be appreciated since one of my sites is currently down due to this issue.