I have a lot of those server errors every 60 minuts lately:
Still running XF 1.5.0 and audentio-uix_addon-1.0.5 with audentio-quark-16_1-5-0-1
Server Error Log
Error Info
ErrorException: array_key_exists() expects parameter 2 to be array, null given - library/Audentio/UIX/CronEntry/UpdateCheck.php:19
Generated By: Unknown Account, Monday at 10:01 PM
Stack Trace
#0 [internal function]: XenForo_Application::handlePhpError(2, 'array_key_exist...', '/home/***/p...', 19, Array)
#1 /home/***/public_html/library/Audentio/UIX/CronEntry/UpdateCheck.php(19): array_key_exists(16, NULL)
#2 [internal function]: Audentio_UIX_CronEntry_UpdateCheck::styles(Array)
#3 /home/***/public_html/library/XenForo/Model/Cron.php(357): call_user_func(Array, Array)
#4 /home/***/public_html/library/XenForo/Deferred/Cron.php(24): XenForo_Model_Cron->runEntry(Array)
#5 /home/***/public_html/library/XenForo/Model/Deferred.php(295): XenForo_Deferred_Cron->execute(Array, Array, 7.99999690056, '')
#6 /home/***/public_html/library/XenForo/Model/Deferred.php(429): XenForo_Model_Deferred->runDeferred(Array, 7.99999690056, '', false)
#7 /home/***/public_html/library/XenForo/Model/Deferred.php(374): XenForo_Model_Deferred->_runInternal(Array, NULL, '', false)
#8 /home/***/public_html/deferred.php(23): XenForo_Model_Deferred->run(false)
#9 {main}
Request State
array(3) {
["url"] => string(41) "
http://mail.games4arcade.com/deferred.php"
["_GET"] => array(0) {
}
["_POST"] => array(3) {
["_xfRequestUri"] => string(21) "/find-new/33944/posts"
["_xfNoRedirect"] => string(1) "1"
["_xfResponseType"] => string(4) "json"
}
}