I can't access to Web App in ACP

[Safety1st]

I can't access to Web App in ACP since day 1: EX0 Something went wrong. Please try again.

TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given (0)
#0 /var/www/ips_usr/data/www/example.com/system/Dispatcher/Controller.php(118): IPS\core\modules\admin\settings\_webapp->manage()
#1 /var/www/ips_usr/data/www/example.com/applications/core/modules/admin/settings/webapp.php(39): IPS\Dispatcher\_Controller->execute()
#2 /var/www/ips_usr/data/www/example.com/system/Dispatcher/Dispatcher.php(153): IPS\core\modules\admin\settings\_webapp->execute()
#3 /var/www/ips_usr/data/www/example.com/admin/index.php(13): IPS\_Dispatcher->run()
#4 {main}

 

[teraßyte]

[Stuart Silvester]

We have released a patch for this issue. To apply, please go to AdminCP > Support > 1st (or top left) box will have a "Optional Patch Available" link. Click it and follow the instructions.