capturing gfxr for a frame

Hello forum,

I am trying to capture GFXR for a vulkan app running on MALI GPU (Oppo Reno 3 with G77) using LunarG gfxrcapture tool.

I have followed the steps described here minimal steps for gfxr capture · Issue #669 · LunarG/gfxreconstruct · GitHub

But haven't been able to capture the GFXR so far. 

Looking for any inputs from the forum if I am missing anything in the steps to be followed.

Thank you,