Root MIUI V7 port error lg l70 ms323

[technology paradise]

Hello guys i was porting miui v7 to the lg l70 from the lg l90 i hade to modify the boot.img unfortunately it did not boot I was able to recover my device and boot my original rom but before I did this the failed mini v7 had this error can anyone tell me what I did wrong the picture will be attached below

The porting guide I used was http://forum.xda-developers.com/android/software/guide-build-port-miui-rom-to-device-t3250984
I used cm 11 as a base

 

[Otelo2]

Thats almost the same text from the purple screen of death, and what appears when you access fastboot.

 

[technology paradise]

Oh do you kno what caused it

 

[Otelo2]

Perhaps your mod to the boot.img?

 

[technology paradise]

Yah i figured do uk how to get around it