bigwig file visualization

[violacimatti]

Hi, so this is my code:

import gosling as gos

data = gos.bigwig(
    url='https://viocim.s3.eu-north-1.amazonaws.com/MB113_H3K27me3.BigWig',  
    column= 'position',
    value='peak'
)

track = gos.Track(data).mark_area().encode(
    x=gos.X('position:G'),
    y=gos.Y("peak:Q", axis="right"),
    color=gos.value("royalblue"),
).properties(title="WNT",height=180,width=725)

vis = track.view(title='WNT')
vis.save('WNT.html')

Can somebody help me understand why I get this: