Lab 6 - URL not found

[clairetalbert]

On lab 6 exercise 1, I am having trouble opening the sea surface temperature dataset. When I run the script, it says URL not found. The script I have written is:
ds = xr.tutorial.open_dataset("sea_surface_temperature.nc")
ds
and the error message is: HTTPError: 404 Client Error: Not Found for url: https://github.com/pydata/xarray-data/raw/master/sea_surface_temperature.nc

[giswqs]

The dataset is not available through xr.tutorial.
It is available at https://github.com/opengeos/datasets/releases/download/netcdf/sea_surface_temperature.nc.