XF 1.2 Failed to update mod

When I update a mod I get the following error.

Server Error

Mysqli statement execute error : Incorrect string value: '\xE2\x96\xBA Pl...' for column 'phrase_text' at row 1

Zend_Db_Statement_Mysqli->_execute() in Zend/Db/Statement.php at line 297
Zend_Db_Statement->execute() in Zend/Db/Adapter/Abstract.php at line 479
Zend_Db_Adapter_Abstract->query() in Zend/Db/Adapter/Abstract.php at line 574
Zend_Db_Adapter_Abstract->insert() in XenForo/DataWriter.php at line 1612
XenForo_DataWriter->_insert() in XenForo/DataWriter.php at line 1601
XenForo_DataWriter->_save() in XenForo/DataWriter.php at line 1393
XenForo_DataWriter->save() in XenForo/Model/Phrase.php at line 1130
XenForo_Model_Phrase->importPhrasesXml() in XenForo/Model/Phrase.php at line 1225
XenForo_Model_Phrase->importPhrasesAddOnXml() in XenForo/Model/AddOn.php at line 328
XenForo_Model_AddOn->importAddOnExtraDataFromXml() in XenForo/Model/AddOn.php at line 226
XenForo_Model_AddOn->installAddOnXml() in XenForo/Model/AddOn.php at line 169
XenForo_Model_AddOn->installAddOnXmlFromFile() in XenForo/ControllerAdmin/AddOn.php at line 231
XenForo_ControllerAdmin_AddOn->actionUpgrade() in XenForo/FrontController.php at line 337
XenForo_FrontController->dispatch() in XenForo/FrontController.php at line 134
XenForo_FrontController->run() in /home/xxxx/www/admin.php at line 13


XenForo developer
Staff member
It's possible the phrase text in the add-on is corrupt. However, you may need to contact the author.

I'm not sure what that character is supposed to be. It's possibly this one which is actually valid, but if your MySQL is rejecting it, it would have to be changed.