Issue: Conlfict with Bot Arrestor?

After upgrade to 4.0.21 I got hundreds of these:

Zend_Db_Statement_Mysqli_Exception: Mysqli statement execute error : Lock wait timeout exceeded; try restarting transaction - library/Zend/Db/Statement/Mysqli.php:214
Generated By: Unknown Account, 52 minutes ago
Stack Trace
#0 /library/Zend/Db/Statement.php(297): Zend_Db_Statement_Mysqli->_execute(Array)
#1 /library/Zend/Db/Adapter/Abstract.php(479): Zend_Db_Statement->execute(Array)
#2 /library/XenForo/Model/DataRegistry.php(164): Zend_Db_Adapter_Abstract->query('\n\t\t\tINSERT INTO...', Array)
#3 /library/XenForo/Application.php(950): XenForo_Model_DataRegistry->set('simpleCache', Array)
#4 /library/Tac/DeDos/Model/DeDosCache.php(1231): XenForo_Application::setSimpleCacheData('dd_known_dos', Array)
#5 /library/Tac/DeDos/Model/DeDosCache.php(47): Tac_DeDos_Model_DeDosCache->removeOldDDKnownDos(Array, true)
#6 /library/Tac/DeDos/Listener.php(126): Tac_DeDos_Model_DeDosCache->checkGlobalCacheForKnownDos()
#7 /library/XenForo/CodeEvent.php(90): Tac_DeDos_Listener::init_dependencies(Object(XenForo_Depe ndencies_Public), Array)
#8 /library/XenForo/Dependencies/Abstract.php(215): XenForo_CodeEvent::fire('init_dependenci...', Array)
#9 /library/XenForo/FrontController.php(127): XenForo_Dependencies_Abstract->preLoadData()
#10 /index.php(13): XenForo_FrontController->run()
#11 {main}
Request State
array(3) {
["url"] => string(42) "https://forum.com/dedos/js-detection"
["_GET"] => array(0) {
}
["_POST"] => array(4) {
["uuid"] => string(18) "f5dd95a9d9ad10f9f3"
["_xfRequestUri"] => string(58) "/threads/ 298684/"
["_xfNoRedirect"] => string(1) "1"
["_xfResponseType"] => string(4) "json"
}
}

Addon is here: https://xenforo.com/community/resour...arrestor.3305/