sd_bus_message_read_array returns error -74

Hello

I am trying to read array of bytes in using the sd_bus_message_read_array
by type 'y' , the sender also has the same format which send the array of
bytes as 'y'

However i see the read_array is failing with erro no -74

Can you please some help me in understanding the error and further triage .

Thanks,
Naseer.