UnsupportedFileSystemException: No FileSystem for scheme “gs”

I’m trying to follow the instruction on gnomAD to access the freq array (gnomAD).
Below are the given code:

# Load the v3.1.2 public release HT
    from gnomad.resources.grch38.gnomad import public_release
    ht = public_release(“genomes”).ht()

    # Use the key 'afr-XX-adj' to retrieve the index of this groups frequency data in 'freq'
    ht = ht.annotate(afr_XX_freq=ht.freq[ht.freq_index_dict['afr-XX-adj']])  

But I ran into the error:

Hail version: 0.2.108-fc03e9d5dc08
Error summary: UnsupportedFileSystemException: No FileSystem for scheme "gs"

at the line ht = public_release("genomes").ht()

How can i solve this?

Thank you