There was an inconsistency in your data

Whenever I try to find active residues through CPORT, I face this error. My peptide is only 20 Amino acid long .please tell me how to remove this error

my file
ATOM 1 N GLY 1 23.460 38.850 33.370 1.00 0.00 N
ATOM 2 CA GLY 1 22.950 38.470 34.710 1.00 0.00 C
ATOM 3 C GLY 1 24.020 37.620 35.410 1.00 0.00 C
ATOM 4 O GLY 1 24.980 37.240 34.740 1.00 0.00 O
ATOM 5 N ILE 2 23.910 37.510 36.720 1.00 0.00 N
ATOM 6 CA ILE 2 24.830 36.720 37.560 1.00 0.00 C
ATOM 7 CB ILE 2 25.520 37.690 38.540 1.00 0.00 C
ATOM 8 CG1 ILE 2 26.540 38.560 37.790 1.00 0.00 C
ATOM 9 CG2 ILE 2 26.150 37.040 39.780 1.00 0.00 C
ATOM 10 CD ILE 2 27.710 37.780 37.160 1.00 0.00 C
ATOM 11 C ILE 2 24.030 35.620 38.280 1.00 0.00 C
ATOM 12 O ILE 2 22.880 35.850 38.650 1.00 0.00 O
ATOM 13 N ASN 3 24.610 34.420 38.290 1.00 0.00 N
ATOM 14 CA ASN 3 24.040 33.260 39.000 1.00 0.00 C
ATOM 15 CB ASN 3 23.570 32.210 37.980 1.00 0.00 C
ATOM 16 CG ASN 3 22.730 31.090 38.610 1.00 0.00 C
ATOM 17 OD1 ASN 3 22.320 31.130 39.760 1.00 0.00 O
ATOM 18 ND2 ASN 3 22.460 30.030 37.880 1.00 0.00 N
ATOM 19 C ASN 3 25.110 32.680 39.940 1.00 0.00 C
ATOM 20 O ASN 3 26.300 32.820 39.670 1.00 0.00 O
ATOM 21 N ALA 4 24.660 32.090 41.050 1.00 0.00 N
ATOM 22 CA ALA 4 25.530 31.550 42.120 1.00 0.00 C
ATOM 23 CB ALA 4 24.700 31.290 43.380 1.00 0.00 C
ATOM 24 C ALA 4 26.300 30.290 41.680 1.00 0.00 C
ATOM 25 O ALA 4 25.840 29.160 41.800 1.00 0.00 O
ATOM 26 N SER 5 27.410 30.610 41.010 1.00 0.00 N
ATOM 27 CA SER 5 28.390 29.700 40.360 1.00 0.00 C
ATOM 28 CB SER 5 27.750 28.800 39.290 1.00 0.00 C
ATOM 29 OG SER 5 27.070 29.570 38.280 1.00 0.00 O
ATOM 30 C SER 5 29.480 30.540 39.680 1.00 0.00 C
ATOM 31 O SER 5 30.650 30.190 39.700 1.00 0.00 O
ATOM 32 N VAL 6 29.020 31.560 38.960 1.00 0.00 N
ATOM 33 CA VAL 6 29.840 32.650 38.390 1.00 0.00 C
ATOM 34 CB VAL 6 29.730 32.620 36.850 1.00 0.00 C
ATOM 35 CG1 VAL 6 30.650 33.660 36.210 1.00 0.00 C
ATOM 36 CG2 VAL 6 30.070 31.250 36.270 1.00 0.00 C
ATOM 37 C VAL 6 29.350 33.990 38.980 1.00 0.00 C
ATOM 38 O VAL 6 28.500 34.680 38.400 1.00 0.00 O
ATOM 39 N VAL 7 29.780 34.270 40.210 1.00 0.00 N
ATOM 40 CA VAL 7 29.460 35.550 40.900 1.00 0.00 C
ATOM 41 CB VAL 7 29.450 35.360 42.430 1.00 0.00 C
ATOM 42 CG1 VAL 7 29.130 36.640 43.200 1.00 0.00 C
ATOM 43 CG2 VAL 7 28.460 34.270 42.850 1.00 0.00 C
ATOM 44 C VAL 7 30.460 36.630 40.480 1.00 0.00 C
ATOM 45 O VAL 7 31.630 36.320 40.250 1.00 0.00 O
ATOM 46 N ASN 8 29.970 37.860 40.300 1.00 0.00 N
ATOM 47 CA ASN 8 30.750 39.110 40.090 1.00 0.00 C
ATOM 48 CB ASN 8 30.070 40.280 40.830 1.00 0.00 C
ATOM 49 CG ASN 8 28.710 40.660 40.240 1.00 0.00 C
ATOM 50 OD1 ASN 8 28.480 40.670 39.040 1.00 0.00 O
ATOM 51 ND2 ASN 8 27.770 41.030 41.070 1.00 0.00 N
ATOM 52 C ASN 8 32.250 39.050 40.450 1.00 0.00 C
ATOM 53 O ASN 8 33.080 38.880 39.570 1.00 0.00 O
ATOM 54 N ILE 9 32.520 38.930 41.750 1.00 0.00 N
ATOM 55 CA ILE 9 33.880 38.830 42.330 1.00 0.00 C
ATOM 56 CB ILE 9 33.780 38.790 43.870 1.00 0.00 C
ATOM 57 CG1 ILE 9 33.030 40.030 44.390 1.00 0.00 C
ATOM 58 CG2 ILE 9 35.170 38.720 44.520 1.00 0.00 C
ATOM 59 CD ILE 9 32.660 39.920 45.870 1.00 0.00 C
ATOM 60 C ILE 9 34.720 37.660 41.770 1.00 0.00 C
ATOM 61 O ILE 9 35.760 37.930 41.170 1.00 0.00 O
ATOM 62 N GLN 10 34.140 36.460 41.740 1.00 0.00 N
ATOM 63 CA GLN 10 34.780 35.220 41.230 1.00 0.00 C
ATOM 64 CB GLN 10 33.820 34.030 41.360 1.00 0.00 C
ATOM 65 CG GLN 10 33.410 33.720 42.800 1.00 0.00 C
ATOM 66 CD GLN 10 32.310 32.660 42.840 1.00 0.00 C
ATOM 67 OE1 GLN 10 31.340 32.660 42.100 1.00 0.00 O
ATOM 68 NE2 GLN 10 32.390 31.790 43.810 1.00 0.00 N
ATOM 69 C GLN 10 35.170 35.360 39.750 1.00 0.00 C
ATOM 70 O GLN 10 36.350 35.560 39.470 1.00 0.00 O
ATOM 71 N LYS 11 34.170 35.770 38.970 1.00 0.00 N
ATOM 72 CA LYS 11 34.310 36.040 37.530 1.00 0.00 C
ATOM 73 CB LYS 11 32.970 36.470 36.930 1.00 0.00 C
ATOM 74 CG LYS 11 33.100 36.550 35.410 1.00 0.00 C
ATOM 75 CD LYS 11 31.840 37.080 34.730 1.00 0.00 C
ATOM 76 CE LYS 11 32.120 37.130 33.240 1.00 0.00 C
ATOM 77 NZ LYS 11 30.910 37.510 32.510 1.00 0.00 N
ATOM 78 C LYS 11 35.370 37.110 37.230 1.00 0.00 C
ATOM 79 O LYS 11 36.190 36.920 36.330 1.00 0.00 O
ATOM 80 N GLU 12 35.330 38.230 37.940 1.00 0.00 N
ATOM 81 CA GLU 12 36.330 39.300 37.790 1.00 0.00 C
ATOM 82 CB GLU 12 35.880 40.610 38.450 1.00 0.00 C
ATOM 83 CG GLU 12 34.630 41.210 37.780 1.00 0.00 C
ATOM 84 CD GLU 12 34.830 41.640 36.320 1.00 0.00 C
ATOM 85 OE1 GLU 12 35.360 42.760 36.110 1.00 0.00 O
ATOM 86 OE2 GLU 12 34.480 40.870 35.400 1.00 0.00 O
ATOM 87 C GLU 12 37.750 38.890 38.190 1.00 0.00 C
ATOM 88 O GLU 12 38.660 39.120 37.390 1.00 0.00 O
ATOM 89 N ILE 13 37.920 38.090 39.250 1.00 0.00 N
ATOM 90 CA ILE 13 39.220 37.470 39.610 1.00 0.00 C
ATOM 91 CB ILE 13 39.160 36.770 40.990 1.00 0.00 C
ATOM 92 CG1 ILE 13 38.860 37.790 42.090 1.00 0.00 C
ATOM 93 CG2 ILE 13 40.470 36.040 41.310 1.00 0.00 C
ATOM 94 CD ILE 13 38.510 37.120 43.430 1.00 0.00 C
ATOM 95 C ILE 13 39.710 36.520 38.510 1.00 0.00 C
ATOM 96 O ILE 13 40.790 36.760 37.960 1.00 0.00 O
ATOM 97 N ASP 14 38.870 35.600 38.050 1.00 0.00 N
ATOM 98 CA ASP 14 39.180 34.680 36.930 1.00 0.00 C
ATOM 99 CB ASP 14 38.030 33.690 36.720 1.00 0.00 C
ATOM 100 CG ASP 14 37.690 32.890 37.980 1.00 0.00 C
ATOM 101 OD1 ASP 14 38.640 32.530 38.710 1.00 0.00 O
ATOM 102 OD2 ASP 14 36.480 32.770 38.240 1.00 0.00 O
ATOM 103 C ASP 14 39.500 35.400 35.610 1.00 0.00 C
ATOM 104 O ASP 14 40.550 35.180 35.010 1.00 0.00 O
ATOM 105 N ARG 15 38.710 36.430 35.300 1.00 0.00 N
ATOM 106 CA ARG 15 38.950 37.340 34.160 1.00 0.00 C
ATOM 107 CB ARG 15 37.810 38.360 34.050 1.00 0.00 C
ATOM 108 CG ARG 15 37.860 39.170 32.750 1.00 0.00 C
ATOM 109 CD ARG 15 36.770 40.250 32.710 1.00 0.00 C
ATOM 110 NE ARG 15 36.970 41.290 33.740 1.00 0.00 N
ATOM 111 CZ ARG 15 37.930 42.220 33.790 1.00 0.00 C
ATOM 112 NH1 ARG 15 38.880 42.320 32.850 1.00 0.00 N
ATOM 113 NH2 ARG 15 37.890 43.150 34.750 1.00 0.00 N
ATOM 114 C ARG 15 40.310 38.070 34.290 1.00 0.00 C
ATOM 115 O ARG 15 41.070 38.060 33.340 1.00 0.00 O
ATOM 116 N LEU 16 40.610 38.630 35.470 1.00 0.00 N
ATOM 117 CA LEU 16 41.930 39.250 35.750 1.00 0.00 C
ATOM 118 CB LEU 16 41.960 39.920 37.130 1.00 0.00 C
ATOM 119 CG LEU 16 41.160 41.230 37.200 1.00 0.00 C
ATOM 120 CD1 LEU 16 41.020 41.680 38.650 1.00 0.00 C
ATOM 121 CD2 LEU 16 41.810 42.330 36.360 1.00 0.00 C
ATOM 122 C LEU 16 43.100 38.270 35.630 1.00 0.00 C
ATOM 123 O LEU 16 44.010 38.540 34.840 1.00 0.00 O
ATOM 124 N ASN 17 42.960 37.070 36.210 1.00 0.00 N
ATOM 125 CA ASN 17 43.940 35.970 36.090 1.00 0.00 C
ATOM 126 CB ASN 17 43.470 34.720 36.850 1.00 0.00 C
ATOM 127 CG ASN 17 43.470 34.870 38.370 1.00 0.00 C
ATOM 128 OD1 ASN 17 44.340 35.450 39.000 1.00 0.00 O
ATOM 129 ND2 ASN 17 42.500 34.260 39.020 1.00 0.00 N
ATOM 130 C ASN 17 44.220 35.570 34.630 1.00 0.00 C
ATOM 131 O ASN 17 45.370 35.660 34.190 1.00 0.00 O
ATOM 132 N GLU 18 43.170 35.290 33.860 1.00 0.00 N
ATOM 133 CA GLU 18 43.330 34.940 32.430 1.00 0.00 C
ATOM 134 CB GLU 18 42.090 34.270 31.830 1.00 0.00 C
ATOM 135 CG GLU 18 41.550 33.040 32.580 1.00 0.00 C
ATOM 136 CD GLU 18 42.600 32.110 33.210 1.00 0.00 C
ATOM 137 OE1 GLU 18 43.250 31.330 32.480 1.00 0.00 O
ATOM 138 OE2 GLU 18 42.780 32.200 34.440 1.00 0.00 O
ATOM 139 C GLU 18 43.840 36.090 31.540 1.00 0.00 C
ATOM 140 O GLU 18 44.740 35.870 30.730 1.00 0.00 O
ATOM 141 N VAL 19 43.390 37.320 31.780 1.00 0.00 N
ATOM 142 CA VAL 19 43.960 38.510 31.090 1.00 0.00 C
ATOM 143 CB VAL 19 43.120 39.790 31.340 1.00 0.00 C
ATOM 144 CG1 VAL 19 43.770 41.050 30.770 1.00 0.00 C
ATOM 145 CG2 VAL 19 41.740 39.630 30.700 1.00 0.00 C
ATOM 146 C VAL 19 45.460 38.700 31.420 1.00 0.00 C
ATOM 147 O VAL 19 46.260 38.810 30.500 1.00 0.00 O
ATOM 148 N ALA 20 45.840 38.530 32.690 1.00 0.00 N
ATOM 149 CA ALA 20 47.250 38.550 33.150 1.00 0.00 C
ATOM 150 CB ALA 20 47.280 38.550 34.680 1.00 0.00 C
ATOM 151 C ALA 20 48.160 37.430 32.600 1.00 0.00 C
ATOM 152 O ALA 20 49.360 37.450 32.850 1.00 0.00 O
ATOM 153 N LYS 21 47.540 36.310 32.210 1.00 0.00 N
ATOM 154 CA LYS 21 48.220 35.220 31.470 1.00 0.00 C
ATOM 155 CB LYS 21 47.490 33.890 31.700 1.00 0.00 C
ATOM 156 CG LYS 21 47.520 33.400 33.140 1.00 0.00 C
ATOM 157 CD LYS 21 46.580 32.210 33.230 1.00 0.00 C
ATOM 158 CE LYS 21 46.360 31.730 34.660 1.00 0.00 C
ATOM 159 NZ LYS 21 45.280 30.730 34.630 1.00 0.00 N
ATOM 160 C LYS 21 48.350 35.410 29.940 1.00 0.00 C
ATOM 161 O LYS 21 49.150 34.710 29.330 1.00 0.00 O
ATOM 162 N ASN 22 47.320 36.020 29.350 1.00 0.00 N
ATOM 163 CA ASN 22 47.260 36.350 27.900 1.00 0.00 C
ATOM 164 CB ASN 22 45.810 36.620 27.480 1.00 0.00 C
ATOM 165 CG ASN 22 44.890 35.400 27.490 1.00 0.00 C
ATOM 166 OD1 ASN 22 45.190 34.290 27.100 1.00 0.00 O
ATOM 167 ND2 ASN 22 43.660 35.610 27.900 1.00 0.00 N
ATOM 168 C ASN 22 48.130 37.520 27.390 1.00 0.00 C
ATOM 169 O ASN 22 48.190 37.730 26.180 1.00 0.00 O
ATOM 170 N LEU 23 48.580 38.370 28.310 1.00 0.00 N
ATOM 171 CA LEU 23 49.400 39.570 28.010 1.00 0.00 C
ATOM 172 CB LEU 23 49.010 40.730 28.940 1.00 0.00 C
ATOM 173 CG LEU 23 47.630 41.350 28.650 1.00 0.00 C
ATOM 174 CD1 LEU 23 47.290 42.350 29.760 1.00 0.00 C
ATOM 175 CD2 LEU 23 47.600 42.040 27.290 1.00 0.00 C
ATOM 176 C LEU 23 50.900 39.310 28.230 1.00 0.00 C
ATOM 177 O1 LEU 23 51.220 38.530 29.150 1.00 0.00 O
ATOM 178 O2 LEU 23 51.690 39.990 27.540 1.00 0.00 O

First of all what is the error message?

Second it does not make much sense to make such predictions for short peptides

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the error is (There was inconsistency in your data). Why is this not suitable for short peptides? Could you please suggest an alternative? I would be thankful