I’m running a mixed-effects model with two (maybe three) random variables so at the end of running my model I get a warning:

**Argument ‘autocor’ should be specified within the ‘formula’ argument. See ?brmsformula for help.**

I read the help page but I really don’t know how to choose the autocor type.

My response variable is a binary factor and the independent variables contain mostly binary factors and continuous variables.

So my question is how do I choose the specification of “autocor”?