i have allmost finished my statistical work, , but i get this next warning message when i fitted the null model:
Warning messages:
1: In theta.ml(Y, mu, sum(w), w, limit = control$maxit, trace = control$trace > :
iteration limit reached
2: In sqrt(1/i) : NaNs produced
3: In theta.ml(Y, mu, sum(w), w, limit = control$maxit, trace = control$trace > :
iteration limit reached
4: In sqrt(1/i) : NaNs produced
wahts the minig of it?