"No prior given"

In the "example" jupyter notebook document, the code in the "priors" section runs with an error output of "No prior given"

14:22 bilby INFO    : No prior given, using default BNS priors in /home/aavatarknd/miniconda3/envs/igwn-py39/lib/python3.9/site-packages/bilby/gw/prior_files/aligned_spins_bns_tides_on.prior.

Could anyone fix this? I'm running the code on wsl-debian.