I am new into brms package and Bayesian modelling. I am trying just to run some trials with the package so I was wondering why the following Error message appears when I try to model a binomial response in function of just two categorical fixed effects (Eg. Behaviour ~ Sex * Day_Period):
Error: Family ‘binomial’ requires numeric responses.
When I 've run the same model in lme4, I didn’t get any error message like this one. Is something related just to BRMS package or just another thing that I am taking into account?