Error in re-building vignettes:
  ...
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Warning in fitter(X, Y, strats, offset, init, control, weights = weights,  :
  Loglik converged before variable  1 ; beta may be infinite. 
Quitting from lines 183-189 (vignette.Rmd) 
Error: processing vignette 'vignette.Rmd' failed with diagnostics:
could not find function "isFALSE"
Execution halted