Hi Bjorn,
I think @ricardoV94’s answer is spot-on: you’re trying to estimate a standard deviation with one data point, which is impossible, so this is expected that NUTS spits out divergencies.
Hope this helps 
Hi Bjorn,
I think @ricardoV94’s answer is spot-on: you’re trying to estimate a standard deviation with one data point, which is impossible, so this is expected that NUTS spits out divergencies.
Hope this helps 