PYNQ: PYTHON PRODUCTIVITY FOR ZYNQ

I am facing this error when i am building an image for enclustra board

WARNING: tmpfile= /petalinux_project/project-spec/hw-description/
ERROR: Default bitsream is not found, please specify a bitstream file path with --fpga

Have you provided a bitstream?
For example, in the PYNQ image for PYNQ-Z1/2 boards, base.bit is generated and used as default.

Cathal