Nutpie sampling issue

Questions v5
,
11 
coords = {
    "date": dates,
    "channel": channels,
    "state": mn_state,
    "cohort": mn_cohort,
}

where

dates = [ 0  1  2 ... 99]
channels = ['TV_val']
mn_state = Index(['Queensland', 'Victoria', 'WA', 'NT'], dtype='object')
mn_cohort = Index(['Males', 'Females', 'Other'], dtype='object')

If it makes any difference, the more complex model is using an adstock and saturation function on the channel data from the pymc_marketing package.