E450G - Resetting Screen Lock Failed!

I need help with this error , I need to remove the screen lock

24/11/2015 18:10:34 > Platform: LG MTK
24/11/2015 18:10:34 > Selected port: COM15
24/11/2015 18:10:34 > Selected baudrate: 921600
24/11/2015 18:10:34 > Selected model: E450G
24/11/2015 18:10:34 > Selected USB connection type
24/11/2015 18:10:35 > Please, disconnect battery and connect cable...24/11/2015 18:11:35 > OK
24/11/2015 18:11:35 > Phone found.
24/11/2015 18:11:35 > CPU name: MT6575
24/11/2015 18:11:35 > CPU revision: 8A00.CB00.E201.0000
24/11/2015 18:11:35 > Setting power state...24/11/2015 18:11:35 > OK
24/11/2015 18:11:35 > Prepairing loader...24/11/2015 18:11:35 > OK
24/11/2015 18:11:35 > Sending loader...24/11/2015 18:11:35 > OK
24/11/2015 18:11:37 > Synchronizing with loader...
24/11/2015 18:11:38 > Loader version: 3.2.132
24/11/2015 18:11:38 > Detecting flash chip...24/11/2015 18:11:38 > OK
24/11/2015 18:11:38 > Detecting EMMC flash chip...24/11/2015 18:11:38 > OK
24/11/2015 18:11:38 > Reading info...24/11/2015 18:11:41 > OK
24/11/2015 18:11:41 > Checking security...
24/11/2015 18:11:44 > Checking security passed!
24/11/2015 18:11:44 > --------------------------------------------------------------------------------
24/11/2015 18:11:44 > IMEI: 355708-XX-XXXXXX-X
24/11/2015 18:11:44 > Bluetooth address: 30:76:6F:53:XX:XX
24/11/2015 18:11:44 > Wi-Fi MAC address: 30:76:6FF:XX:XX
24/11/2015 18:11:44 > EMMC rpmb size: 2 Mb
24/11/2015 18:11:44 > EMMC boot1 size: 2 Mb
24/11/2015 18:11:44 > EMMC boot2 size: 2 Mb
24/11/2015 18:11:44 > EMMC gp1 size: 0 Mb
24/11/2015 18:11:44 > EMMC gp2 size: 0 Mb
24/11/2015 18:11:44 > EMMC gp3 size: 0 Mb
24/11/2015 18:11:44 > EMMC gp4 size: 0 Mb
24/11/2015 18:11:44 > EMMC user area size: 3696 Mb
24/11/2015 18:11:44 > --------------------------------------------------------------------------------
24/11/2015 18:11:44 > This process can take about 15 minutes. Please, wait...
24/11/2015 18:11:44 > Resetting Screen Lock...24/11/2015 18:12:03 > Failed!

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E450G - Resetting Screen Lock Failed!