Gateway with Raspberry Pi Model 3 V1.2 not work

Hi all,
I tried to build the gateway with Raspberry Pi Model 3 V1.2 which the micro SD card was flashed the image “DRTLS_raspbian_R2.0.img” in the software package. However, it’s not work and the screen shows “end kernel panic - not syncing : VFS: Unable to mount root fs on unknown -block(179,2)” and I can’t find it’s IP. Is there anybody experienced the same situation? Thanks a lot.

I tried to flash another SD card and it has been solved.