Errors after installing the addon

After installing the add-on to the main site Metadataessential there are many errors. Tell me, please, what's the problem?

Code:

Zend_Db_Statement_Mysqli_Exception: Mysqli statement execute error : Data too long for column 'keywords' at row 1 - library/Zend/Db/Statement/Mysqli.php:214
Сгенерирована пользователем: *******, Сегодня, в 09:28
Трассировка стэка
#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/Brivium/MetadataEssential/Model/Metadata.php(174): Zend_Db_Adapter_Abstract->query('????INSERT DELA...', Array)
#3 ********/library/Brivium/MetadataEssential/Model/Metadata.php(180): Brivium_MetadataEssential_Model_Metadata->insertMetadata(Array)
#4 ********/httpdocs/library/Brivium/MetadataEssential/ControllerPublic/Thread.php(57): Brivium_MetadataEssential_Model_Metadata->updateMetadata(Array, 'thread', 25)
#5 ********/library/Brivium/MetadataEssential/DataWriter/Discussion/Thread.php(13): Brivium_MetadataEssential_ControllerPublic_Thread->brmeActionSave(Object(Brivium_MetadataEssential_DataWriter_Discussion_Thread))
#6 ********/library/XenForo/ControllerPublic/Thread.php(945): Brivium_MetadataEssential_DataWriter_Discussion_Thread->save()
#7 ********/library/Brivium/MetadataEssential/ControllerPublic/Thread.php(31): XenForo_ControllerPublic_Thread->actionSave()
#8 ********/library/XenForo/FrontController.php(337): Brivium_MetadataEssential_ControllerPublic_Thread->actionSave()
#9 ********/library/XenForo/FrontController.php(134): XenForo_FrontController->dispatch(Object(XenForo_RouteMatch))
#10 ********/index.php(13): XenForo_FrontController->run()
#11 {main}
Содержимое запроса
array(3) {
  ["url"] => string(83) "********.25/save"
  ["_GET"] => array(0) {
  }
  ["_POST"] => array(8) {
    ["title"] => string(84) "********"
    ["discussion_open"] => string(1) "1"
    ["_set"] => array(2) {
      ["discussion_open"] => string(1) "1"
      ["sticky"] => string(1) "1"
    }
    ["sticky"] => string(1) "1"
    ["BRME_meta_title"] => string(89) "********"
    ["BRME_meta_description"] => string(89) "********"
    ["BRME_meta_keywords"] => string(515) "********"
    ["_xfToken"] => string(8) "********"
  }
}

Code:

Zend_Db_Statement_Mysqli_Exception: Mysqli statement execute error : Data too long for column 'keywords' at row 83 - library/Zend/Db/Statement/Mysqli.php:214
Сгенерирована пользователем: *******, Сегодня, в 14:05
Трассировка стэка
#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/Zend/Db/Adapter/Abstract.php(632): Zend_Db_Adapter_Abstract->query('UPDATE `xf_briv...', Array)
#3 *******/library/Brivium/MetadataEssential/Model/Metadata.php(200): Zend_Db_Adapter_Abstract->update('xf_brivium_meta...', Array, 'content_type = ...')
#4 *******/library/Brivium/MetadataEssential/ControllerPublic/Thread.php(57): Brivium_MetadataEssential_Model_Metadata->updateMetadata(Array, 'thread', 338)
#5 *******/library/Brivium/MetadataEssential/DataWriter/Discussion/Thread.php(13): Brivium_MetadataEssential_ControllerPublic_Thread->brmeActionSave(Object(Brivium_MetadataEssential_DataWriter_Discussion_Thread))
#6 *******/library/XenForo/ControllerPublic/Thread.php(945): Brivium_MetadataEssential_DataWriter_Discussion_Thread->save()
#7 *******/library/Brivium/MetadataEssential/ControllerPublic/Thread.php(31): XenForo_ControllerPublic_Thread->actionSave()
#8 *******/library/XenForo/FrontController.php(337): Brivium_MetadataEssential_ControllerPublic_Thread->actionSave()
#9 *******/library/XenForo/FrontController.php(134): XenForo_FrontController->dispatch(Object(XenForo_RouteMatch))
#10 *******/index.php(13): XenForo_FrontController->run()
#11 {main}
Содержимое запроса
array(3) {
  ["url"] => string(96) "*******.338/save"
  ["_GET"] => array(0) {
  }
  ["_POST"] => array(7) {
    ["title"] => string(108) "*******"
    ["discussion_open"] => string(1) "1"
    ["_set"] => array(2) {
      ["discussion_open"] => string(1) "1"
      ["sticky"] => string(1) "1"
    }
    ["BRME_meta_title"] => string(108) "*******"
    ["BRME_meta_description"] => string(70) "*******"
    ["BRME_meta_keywords"] => string(561) "*******"
    ["_xfToken"] => string(8) "********"
  }
}