Not enough variation for this model, it seems. It spans the range 0.2 - 0.9 which is not much for a Poisson GLM with uninformative priors (and / or this dataset size / coefficient ranges).
Not enough variation for this model, it seems. It spans the range 0.2 - 0.9 which is not much for a Poisson GLM with uninformative priors (and / or this dataset size / coefficient ranges).