if so, check if the content is there.
if it is there enable dev mode and refresh your website, then disable it again. Please do the search before posting anything on the forum, your issue in particular has been discussed a lot of times, it's just another file.
Message:SQLSTATE[HY000] [2013] Lost connection to MySQL server at 'reading initial communication packet', system error: 0File:/home/u903742943/public_html/ow_core/database.phpLine:223Trace:#0 /home/u903742943/public_html/ow_core/database.php(253): OW_Database->__construct(Array) #1 /home/u903742943/public_html/ow_core/ow.php(230): OW_Database::getInstance(Array) #2 /home/u903742943/public_html/ow_core/base_dao.php(47): OW::getDbo() #3 /home/u903742943/public_html/ow_system_plugins/base/bol/config_dao.php(66): OW_BaseDao->__construct() #4 /home/u903742943/public_html/ow_system_plugins/base/bol/config_dao.php(55): BOL_ConfigDao->__construct() #5 /home/u903742943/public_html/ow_system_plugins/base/bol/config_service.php(63): BOL_ConfigDao::getInstance() #6 /home/u903742943/public_html/ow_system_plugins/base/bol/config_service.php(52): BOL_ConfigService->__construct() #7 /home/u903742943/public_html/ow_core/config.php(48): BOL_ConfigService::getInstance() #8 /home/u903742943/public_html/ow_core/config.php(68): OW_Config->__construct() #9 /home/u903742943/public_html/ow_core/ow.php(167): OW_Config::getInstance() #10 /home/u903742943/public_html/ow_core/ow.php(100): OW::getConfig() #11 /home/u903742943/public_html/ow_core/ow.php(145): OW::detectContext() #12 /home/u903742943/public_html/index.php(44): OW::getApplication() #13 {main}Type:InvalidArgumentException