error in coastline extraction tutorial

[e0575625_MSC2020]

Hi, i am following the tutorial by https://developers.arcgis.com/python/sample-notebooks/coastline-extraction-usa-landsat8-multispectra...

i have having issue with the line :

gis2 = GIS('https://pythonapi.playground.esri.com/portal', 'arcgis_python', 'amazing_arcgis_123')

 The error is unable to generate token. Invalid username and password.

Also with this line :

landsat_item = gis.content.search('title:Multispectral Landsat owner:esri_livingatlas tags:Multitemporal, imagery, landsat 8, temporal, MS', 'Imagery Layer', outside_org=True)[0]
landsat = landsat_item.layers[0]
landsat_item

The error is list index out of range

Same for this:

aoi = gis.content.search('usa_coast_buff_f', 'feature layer')[0]

The error is list index out of range.

[e0575625_MSC2020]

Update on my issues. I have resolved the last two items. for the 2nd issue it was a query issue, the existing query in the tutorial given is invalid, have to update accordingly. For the last issue, it requires a "outside_org = True" argument in the function.

I still need help with the first issue, thanks in advance.