[25-Sep-2016 03:50:56 Europe/Berlin] PHP Fatal error: Uncaught exception 'Exception' with message 'Query error: Duplicate entry '477789' for key 'PRIMARY' (INSERT INTO tl_log (tstamp, source, action, username, text, func, ip, browser) VALUES(1474768256, 'FE', 'ACCESS', 'xxx', 'User "xxx" was logged in automatically', 'Contao\\FrontendUser::authenticate', 'xx.xxx.xxx.x', 'Mozilla/5.0 (Linux; Android 6.0.1; SAMSUNG xxx) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/4.0 Chrome/xx.x.xxxx.xxx Mobile Safari/537.36'))' thrown in xxx/system/modules/core/library/Contao/Database/Statement.php on line 295
#0 xxx/system/modules/core/library/Contao/Database/Statement.php(264): Contao\Database\Statement->query()
#1 xxx/system/modules/core/library/Contao/System.php(189): Contao\Database\Statement->execute(1474768256, 'FE', 'ACCESS', 'xxx', 'User "xxx....', 'Contao\\Frontend...', 'xx.xxx.xxx.x', 'Mozilla/5.0 (Li...')
#2 xxx/system/modules/core/classes/FrontendUser.php(182): Contao\System::log('User "xxx...', 'Contao\\Frontend...', 'ACCESS')
#3 xxx/system/modules/core/controllers/FrontendIndex.php(241): Contao\FrontendUser->authenticate()
#4 xxx/index.php(20): Contao\FrontendIndex->run()
#5 {main}