XF 2.2 Odd error in xenforo error logs

[Daveo16]

This is the odd error we are seeing in the xenForo Error Logs, repetitively...

TypeError: substr(): Argument #1 ($string) must be of type string, array given src/XF/Repository/SessionActivity.php:216

Stack trace

#0 src/XF/Repository/SessionActivity.php(216): substr(Array, 0, 25)
#1 src/XF/Pub/Controller/AbstractController.php(85): XF\Repository\SessionActivity->updateSessionActivity(0, 'xx.xx.xx.xx', 'XF\\Pub\\Controll...', 'List', Array, 'valid', Array)
#2 src/XF/Pub/Controller/AbstractController.php(45): XF\Pub\Controller\AbstractController->updateSessionActivity('List', Object(XF\Mvc\ParameterBag), Object(XF\Mvc\Reply\View))
#3 src/XF/Mvc/Controller.php(360): XF\Pub\Controller\AbstractController->postDispatchType('List', Object(XF\Mvc\ParameterBag), Object(XF\Mvc\Reply\View))
#4 src/XF/Mvc/Dispatcher.php(385): XF\Mvc\Controller->postDispatch('List', Object(XF\Mvc\ParameterBag), Object(XF\Mvc\Reply\View))
#5 src/XF/Mvc/Dispatcher.php(259): XF\Mvc\Dispatcher->dispatchClass('XF\\Pub\\Controll...', 'List', Object(XF\Mvc\RouteMatch), Object(XV\Pub\Controller\Forum), Object(XF\Mvc\Reply\Reroute))
#6 src/XF/Mvc/Dispatcher.php(115): XF\Mvc\Dispatcher->dispatchFromMatch(Object(XF\Mvc\RouteMatch), Object(XV\Pub\Controller\Forum), Object(XF\Mvc\Reply\Reroute))
#7 src/XF/Mvc/Dispatcher.php(57): XF\Mvc\Dispatcher->dispatchLoop(Object(XF\Mvc\RouteMatch))
#8 src/XF/App.php(2487): XF\Mvc\Dispatcher->run()
#9 src/XF.php(524): XF\App->run()
#10 index.php(20): XF::runApp('XF\\Pub\\App')
#11 {main}

Request state

array(4) {
  ["url"] => string(1) "/"
  ["referrer"] => bool(false)
  ["_GET"] => array(0) {
  }
  ["_POST"] => array(0) {
  }
}

Any idea how to fix this, as we are not sure what's causing it to appear and it only started appearing within the last 24 hours, tho no new addons or addon updates have been installed.

Site is running on Debian 11, nginx, PHP 8.1, MariaDB 10.5. Also using redis & ElasticSearch.

 

[benFF]

Known Bots

Server says that:

xenforo.com

 

[Daveo16]

Many thanks.

That fixed the issue

 

[ekool]

This might hit other people. It started happening to us today as well, out of the blue somehow. It broke the site for guests as well somehow.

 

[Daveo16]

It also breaks the mobile version of the site.

 

[Sim]

I've released v4.0.1 of the KnownBots addon to help mitigate these issues and prevent bad API data from breaking forums - https://xenforo.com/community/threads/known-bots.148723/page-12#post-1644331

You should also manually force a fetch of new API data by executing the following command from your forum root:

php cmd.php known-bots:fetch -f