Warning: mysqli::real_connect(): (HY000/2002): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (111) in system/modules/core/library/Contao/Database/Mysqli.php on line 46
#0 [internal function]: __error(2, 'mysqli::real_co...', '...', 46, Array)
#1 system/modules/core/library/Contao/Database/Mysqli.php(46): mysqli->real_connect('localhost', 'klaessw', 'YkxS0MdEDKT6bCZ...', 'klaessw', 3306, '')
#2 system/modules/core/library/Contao/Database.php(81): Contao\Database\Mysqli->connect()
#3 system/modules/core/library/Contao/Database.php(165): Contao\Database->__construct(Array)
#4 [internal function]: Contao\Database::getInstance()
#5 system/modules/core/library/Contao/System.php(140): call_user_func(Array)
#6 system/modules/core/library/Contao/User.php(158): Contao\System->import('Database')
#7 system/modules/core/classes/FrontendUser.php(62): Contao\User->__construct()
#8 system/modules/core/library/Contao/User.php(220): Contao\FrontendUser->__construct()
#9 [internal function]: Contao\User::getInstance()
#10 system/modules/core/library/Contao/System.php(140): call_user_func(Array)
#11 system/modules/core/controllers/FrontendIndex.php(31): Contao\System->import('FrontendUser', 'User')
#12 index.php(19): Contao\FrontendIndex->__construct()
#13 {main}

Fatal error: Uncaught exception Exception with message Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (111) thrown in system/modules/core/library/Contao/Database/Mysqli.php on line 50
#0 system/modules/core/library/Contao/Database.php(81): Contao\Database\Mysqli->connect()
#1 system/modules/core/library/Contao/Database.php(165): Contao\Database->__construct(Array)
#2 [internal function]: Contao\Database::getInstance()
#3 system/modules/core/library/Contao/System.php(140): call_user_func(Array)
#4 system/modules/core/library/Contao/User.php(158): Contao\System->import('Database')
#5 system/modules/core/classes/FrontendUser.php(62): Contao\User->__construct()
#6 system/modules/core/library/Contao/User.php(220): Contao\FrontendUser->__construct()
#7 [internal function]: Contao\User::getInstance()
#8 system/modules/core/library/Contao/System.php(140): call_user_func(Array)
#9 system/modules/core/controllers/FrontendIndex.php(31): Contao\System->import('FrontendUser', 'User')
#10 index.php(19): Contao\FrontendIndex->__construct()
#11 {main}

Warning: Unknown: open(/var/lib/php5/sess_s68me5aa8lopia3uatl4phj1m4, O_RDWR) failed: Read-only file system (30) in Unknown on line 0
#0 [internal function]: __error(2, 'Unknown: open(/...', 'Unknown', 0, NULL)
#1 {main}

Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/lib/php5) in Unknown on line 0
#0 [internal function]: __error(2, 'Unknown: Failed...', 'Unknown', 0, NULL)
#1 {main}