Uncaught exception - mysql.c(509) : Failed to connect to mysql server : Failed to connect on host 'localhost'

Called from ? line 1
Called from MyController.hx line 97
Called from MyController.hx line 130
Called from MyController.hx line 102
Called from /usr/lib/haxe/std/neko/_std/sys/db/Mysql.hx line 203