SM-G920I Dm-verity verificaion faild

Model: Galaxy S6 (SM-G920I)
Fault: Stuck at Samsung Galaxy S6 Logo and Keep Restarting
@ Recovery Saying Dm-verity verification failed
Need to check DRK first.

Present Repair attempts:
1.Flashed Stock Rom: G920IDVU3DOL5_G920IODD3DOL1_G920IDVU3DOL5_HOME.tar

2. Flashed S6_UniKernel_v8-0002 –

3. Flashed custom recovery twrp-
Still shows same
Plz help Octopus team.

This is after flash uni kernal:

This is After flash Stock rom:

Thanks in Advanced.