I keep checking my error log and this particular error apprears over and over and I am not sure what it is can you take a look and give me some idea?

Hi when I check my error log this error comes up again and again and is causing errors on my web servers. This is the entry in my log file for cbsubs:

NOTICE: Use of undefined constant _UE_MENU_PM_INBOX_DESC - assumed '_UE_MENU_PM_INBOX_DESC' in /home/bucknla1961/public_html/joomla/components/com_comprofiler/plugin/user/plug_privatemessagingsystem(uddeimpms)/pms.uddeim.php on line 330
Trace:called in class cbpaidErrorHandler::_error_handler_callable(8, "Use of undefined constant _UE_MENU_PM_INBOX_DESC - assumed '_UE_MENU_PM_INBOX_DESC'", "/home/bucknla1961/public_html/joomla/components/com_comprofiler/plugin/user/plug_privatemessagingsystem(uddeimpms)/pms.uddeim.php", 330, array("toid" => NULL, "fromid" => 541, "subject" => NULL, "message" => NULL, "kind" => 2, "_CB_database" => object(CBLib\Database\Driver\CmsDatabaseDriver), "params" => object(CBLib\Registry\Registry), "pmsType" => 1, "pmsurlBase" => "index.php?option=com_uddeim", "pmsurlSend" => "index.php?option=com_uddeim&task=new&recip=", "pmsurlInbox" => "index.php?option=com_uddeim&task=inbox", "pmsurlOutbox" => "index.php?option=com_uddeim&task=outbox", "pmsurlTrashbox" => "index.php?option=com_uddeim&task=trashcan", "pmsurlOptions" => "index.php?option=com_uddeim&task=settings", "item_id" => 0, "pms_id" => 0, "pmsitemid" => NULL)) on line 330 in file pms.uddeim.php
called in class getuddeimTab::getPMSlink(NULL, 541, NULL, NULL, 2)
called in function call_user_func_array(array(0 => object(getuddeimTab), 1 => "getPMSlink"), array(0 => NULL, 1 => 541, 2 => NULL, 3 => NULL, 4 => 2)) on line 884 in file cbPluginHandler.php
called in class cbPluginHandler::call("627", "getPMSlink", "getuddeimTab", array(0 => NULL, 1 => 541, 2 => NULL, 3 => NULL, 4 => 2), "{"pmsType":"1","doSingleEscape":"0","doEscape":"1","pmsMenuText":"_UE_PM_USER","pmsMenuDesc":"_UE_MENU_PM_USER_DESC","pmsMenuInboxText":"_UE_PM_INBOX","pmsMenuInboxDesc":"_UE_MENU_PM_INBOX_DESC","pmsMenuOutboxText":"_UE_PM_OUTBOX","pmsMenuOutboxDesc":"_UE_MENU_PM_OUTBOX_DESC","pmsMenuTrashboxText":"_UE_PM_TRASHBOX","pmsMenuTrashboxDesc":"_UE_MENU_PM_TRASHBOX_DESC","pmsMenuOptionsText":"_UE_PM_OPTIONS","pmsMenuOptionsDesc":"_UE_MENU_PM_OPTIONS_DESC"}") on line 52 in file cbPMS.php
called in class cbPMS::_callPlugin(object(CB\Database\Table\PluginTable), array(0 => NULL, 1 => 541, 2 => NULL, 3 => NULL, 4 => 2), "getuddeimTab", "getPMSlink") on line 88 in file cbPMS.php
called in class cbPMS::_callPluginTypeMethod("pms", "getPMSlink", array(0 => NULL, 1 => 541, 2 => NULL, 3 => NULL, 4 => 2)) on line 124 in file cbPMS.php
called in class cbPMS::getPMSlinks(NULL, 541, NULL, NULL, 2) on line 120 in file mod_cblogin.php
called in function include("/home/bucknla1961/public_html/joomla/modules/mod_cblogin/mod_cblogin.php") on line 190 in file helper.php
called in class JModuleHelper::renderModule(object(stdClass), array("name" => "position-7", "style" => "beezDivision", "headerLevel" => "3")) on line 105 in file module.php
called in class JDocumentRendererModule::render(object(stdClass), array("name" => "position-7", "style" => "beezDivision", "headerLevel" => "3"), NULL) on line 46 in file modules.php
called in class JDocumentRendererModules::render("position-7", array("name" => "position-7", "style" => "beezDivision", "headerLevel" => "3"), NULL) on line 408 in file html.php
called in class JDocumentHTML::getBuffer("modules", "position-7", array("name" => "position-7", "style" => "beezDivision", "headerLevel" => "3")) on line 696 in file html.php
called in class JDocumentHTML::_renderTemplate() on line 474 in file html.php
called in class JDocumentHTML::render(false, array("template" => "beez3", "file" => "index.php", "params" => object(Joomla\Registry\Registry), "directory" => "/home/bucknla1961/public_html/joomla/templates")) on line 988 in file cms.php
called in class JApplicationCms::render() on line 731 in file site.php
called in class JApplicationSite::render() on line 257 in file cms.php
called in class JApplicationCms::execute() on line 40 in file index.php
$_GET = array (
'user' => '541',
'plugin' => 'cbpaidsubscriptions',
'cbpact' => 'editinvoiceaddress',
'cbpbasket' => '15277',
'cbpbck' => '209ff1e84c454b106827386e7cf1e763bc7d6446700536d1a2c80c6d',
'option' => 'com_comprofiler',
'view' => 'userprofile',
'Itemid' => '496',
'task' => 'userprofile',
)
$_POST = array (
)

Table affected -
Table Key
Change
Change
Username hornycubb
Full name Matt Orange
User Id 541
IP Address 73.2.94.24
Log Priority Notice
Log Id 410625
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Thanks for your help

You don't have any errors, but just notices. A language string that doesn't exist is trying to display. Specifically it's coming from the UddeIM CB plugin provided by UddeIM. Our core Private Message System plugin does not have this issue.