最近运行一个程序：



m0 <- lmer(b ~ 1 +  (1 | sp), data = Data)

mm0<-MCMCglmm(b ~ 1 ,  random = ~ sp+species, data=Data)
Error in MCMCglmm(b ~ 1, random = ~sp + species, data = Data) :
  family column exists in data and in family argument to MCMCglmm: specify family=NULL

请大神指导