Changing the MIG slicing crashes the gpu-feature-discovery

When I change the MIG slicing, the gpu-feature-discovery fails with this error:

gpu-feature-discovery: 2020/12/01 14:59:10 Sleeping for 1m0s
gpu-feature-discovery: 2020/12/01 15:00:10 Unexpected error: Error generating labels from MIG strategy: Unable to retreive list of MIG devices: nvml: Unknown Error
gpu-feature-discovery: 2020/12/01 15:00:10 Exiting

tested in mixed and single modes.

sh-4.4# /usr/bin/gpu-feature-discovery --version
gpu-feature-discovery: 2020/12/01 14:49:04 Running gpu-feature-discovery in version 0.2.1
gpu-feature-discovery 0.2.1