j727A why not root?

hello

how are you team

this model showing root support but not rooting

Chimera Mobile Phone Utility version: 17.48.1227 @ 2018-05-17

[Rooting phone started]

Checking custom root image...
This model is not available custom root image.
Unable to root. Retry or root manually. Click here to download rooting tools.
Finished at local time: [05.17.18 11:01:18]
WorkID: 37884684
:confused: