Code hangs on --> await vdma.s2mm_introut.wait()

Hi,

I am trying to use interrupts in PYNQ
The code in my notebook just hangs on following statement

await isp.vdma_raw.s2mm_introut.wait() # Wait for the interrupt to happen.

I get following message
/usr/lib/python3/dist-packages/ipykernel_launcher.py:43: RuntimeWarning: coroutine ‘get_frames’ was never awaited

Any pointers to what might be wrong.The interrupt is happening as I can see it on
ILA