I'm having problems related to the registration department to contact the site plugin. When I register a new department, the site sends me to a page error, internal error 500 And still the same as is used for sending contact the site, it does not send the message. The SMTP configuration is properly done, and the same is attested as functional. I do not know what else to do because I checked alsothe Cron configuration that is also properly configured and active. What should I do?

Error presented ...

OW Debug - ExceptionMessage:SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '21076-28' for key 'keyId'File:/home/gustogas/public_html/ow_core/database.phpLine:331Trace:#0 /home/gustogas/public_html/ow_core/database.php(331): PDOStatement->execute()#1 /home/gustogas/public_html/ow_core/database.php(564): OW_Database->execute('INSERT INTO `ow...', Array)#2 /home/gustogas/public_html/ow_core/database.php(601): OW_Database->insert('INSERT INTO `ow...', Array)#3 /home/gustogas/public_html/ow_core/base_dao.php(216): OW_Database->insertObject('ow_base_languag...', Object(BOL_LanguageValue))#4 /home/gustogas/public_html/ow_system_plugins/base/bol/language_service.php(169): OW_BaseDao->save(Object(BOL_LanguageValue))#5 /home/gustogas/public_html/ow_plugins/contactus/bol/service.php(83): BOL_LanguageService->addValue(28, 'contactus', 'dept_2', 'Financeiro')#6 /home/gustogas/public_html/ow_plugins/contactus/controllers/admin.php(84): CONTACTUS_BOL_Service->addDepartment('financeiro@gust...', 'Financeiro')#7 [internal function]: CONTACTUS_CTRL_Admin->dept(Array)#8 /home/gustogas/public_html/ow_core/request_handler.php(263): call_user_func_array(Array, Array)#9 /home/gustogas/public_html/ow_core/application.php(327): OW_RequestHandler->dispatch()#10 /home/gustogas/public_html/index.php(65): OW_Application->handleRequest()#11 {main}Type:PDOException