chi2 not allowed with mrtab and weight

Hi, I try to do a chi2 test of significance. When I do not add weight, stata allows it, but when I try with "aw" or "iw" it returns error.

Code:

. mrtab temas1-temas3, poly response (1/83) by(cuatro) nolabel nofreq col chi2 mtest

            |                     cuatro                     
            |          1           2           3           4 |      Total   chi2/p*
------------+------------------------------------------------+-----------
         10 |      15.56       21.17       45.31        3.33 |      23.91    25.386
            |                                                |                0.000
------------+------------------------------------------------+-----------
         11 |       0.00        3.65        7.81        0.00 |       3.62     6.036
            |                                                |                0.110
------------+------------------------------------------------+-----------
         12 |      20.00        9.49        0.00       13.33 |       9.42    13.098
            |                                                |                0.004
------------+------------------------------------------------+-----------
         20 |      37.78       58.39       48.44       16.67 |      48.19    19.609
            |                                                |                0.000
------------+------------------------------------------------+-----------
         21 |       0.00        0.00        4.69        0.00 |       1.09    10.047
            |                                                |                0.018
------------+------------------------------------------------+-----------
         22 |      11.11        0.00        0.00        3.33 |       2.17    21.558
            |                                                |                0.000
------------+------------------------------------------------+-----------
         23 |       0.00        2.19        6.25        0.00 |       2.54     5.589
            |                                                |                0.133
------------+------------------------------------------------+-----------
         24 |      20.00        5.84        7.81       13.33 |       9.42     8.694
            |                                                |                0.034
------------+------------------------------------------------+-----------
         25 |      26.67       13.14        1.56       43.33 |      15.94    31.338
            |                                                |                0.000
------------+------------------------------------------------+-----------
         26 |       2.22       10.95        6.25       10.00 |       8.33     3.900
            |                                                |                0.273
------------+------------------------------------------------+-----------
         30 |      22.22       17.52        9.38       30.00 |      17.75     6.779
            |                                                |                0.079
------------+------------------------------------------------+-----------
         40 |      17.78       67.88       65.63       30.00 |      55.07    44.886
            |                                                |                0.000
------------+------------------------------------------------+-----------
         41 |       2.22       16.06        4.69        0.00 |       9.42    14.607
            |                                                |                0.002
------------+------------------------------------------------+-----------
         50 |       0.00        0.73        1.56        0.00 |       0.72     1.172
            |                                                |                0.760
------------+------------------------------------------------+-----------
         51 |       0.00        6.57       32.81        0.00 |      10.87    43.569
            |                                                |                0.000
------------+------------------------------------------------+-----------
         60 |       6.67        8.03        9.38        6.67 |       7.97     0.347
            |                                                |                0.951
------------+------------------------------------------------+-----------
         61 |      11.11        1.46        9.38       23.33 |       7.25    19.807
            |                                                |                0.000
------------+------------------------------------------------+-----------
         62 |       2.22        0.73        0.00       23.33 |       3.26    43.410
            |                                                |                0.000
------------+------------------------------------------------+-----------
         63 |       0.00        0.00        0.00        6.67 |       0.72    16.520
            |                                                |                0.001
------------+------------------------------------------------+-----------
         64 |       2.22        2.19        0.00        0.00 |       1.45     2.097
            |                                                |                0.553
------------+------------------------------------------------+-----------
         70 |       0.00        1.46        7.81       23.33 |       5.07    27.891
            |                                                |                0.000
------------+------------------------------------------------+-----------
         80 |       4.44        0.00        6.25        0.00 |       2.17     9.802
            |                                                |                0.020
------------+------------------------------------------------+-----------
         81 |       2.22        4.38        0.00        3.33 |       2.90     3.071
            |                                                |                0.381
------------+------------------------------------------------+-----------
         82 |       6.67        5.84        1.56       10.00 |       5.43     3.260
            |                                                |                0.353
------------+------------------------------------------------+-----------
         83 |       0.00        1.46        4.69        0.00 |       1.81     4.455
            |                                                |                0.216
------------+------------------------------------------------+-----------
      Total |     211.11      259.12      281.25      260.00 |     256.52

"mrtab temas1-temas3 [aw=pesonac], poly response (1/83) by(cuatro) nofreq col chi2 mtest
option chi2 not allowed
r(198);"


Any solutions?