I am trying to do a avplot after my tobit estimation to check for outliers/ extreme values

here are my results
Code:
tobit percent_expshare_wine_on log_price_wine_on log_price_wine_off logincome i.socio_group i.gor_recode i.sexhrp , ll(0)

Refining starting values:

Grid node 0:   log likelihood = -47747.393

Fitting full model:

Iteration 0:   log likelihood = -47747.393  
Iteration 1:   log likelihood = -32372.522  
Iteration 2:   log likelihood =  -27312.95  
Iteration 3:   log likelihood = -25237.826  
Iteration 4:   log likelihood = -24929.648  
Iteration 5:   log likelihood = -24924.116  
Iteration 6:   log likelihood = -24924.114  

Tobit regression                                Number of obs     =     34,301
                                                   Uncensored     =      6,509
Limits: lower = 0                                  Left-censored  =     27,792
        upper = +inf                               Right-censored =          0

                                                LR chi2(15)       =    2514.40
                                                Prob > chi2       =     0.0000
Log likelihood = -24924.114                     Pseudo R2         =     0.0480

------------------------------------------------------------------------------
percent~e_on |      Coef.   Std. Err.      t    P>|t|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
log_pri~e_on |   .5162378   1.183649     0.44   0.663    -1.803753    2.836228
log_pr~e_off |  -1.085473   1.175537    -0.92   0.356    -3.389565    1.218619
   logincome |   1.373729   .0415701    33.05   0.000      1.29225    1.455208
             |
 socio_group |
          2  |   .0873766   .0682073     1.28   0.200     -.046312    .2210652
          3  |  -.7677631   .0790945    -9.71   0.000     -.922791   -.6127353
          4  |  -1.453442   .2787138    -5.21   0.000    -1.999731   -.9071538
          5  |   .2039505   .1875383     1.09   0.277    -.1636307    .5715317
          6  |  -.0079945   .0619298    -0.13   0.897     -.129379      .11339
             |
  gor_recode |
          2  |  -.3123735   .0904925    -3.45   0.001    -.4897419   -.1350051
          3  |  -.3112034   .0886092    -3.51   0.000    -.4848804   -.1375264
          4  |  -.0465098   .0879178    -0.53   0.597    -.2188316    .1258121
          5  |  -.3931184   .1339016    -2.94   0.003      -.65557   -.1306667
          6  |  -.3035262   .1086274    -2.79   0.005    -.5164394   -.0906129
          7  |  -.4784591   .1237286    -3.87   0.000    -.7209713    -.235947
             |
      sexhrp |
     Female  |   .1663446   .0487767     3.41   0.001     .0707407    .2619485
       _cons |  -12.30692   1.824931    -6.74   0.000    -15.88385   -8.729995
-------------+----------------------------------------------------------------
var(e.perc..)|   8.360073   .1699498                      8.033515    8.699906
------------------------------------------------------------------------------
and then the code i am trying to use to do an avplot is
Code:
avplot
but it says last estimates not found,
this is also happens when i try and do a residual plot, can anyone explain why