density not provided.Self weight command ignored

as in staad pro curved beams cannot be designed so to design a pergola with curved beams i made a model as attached, there is only self weight and live load acting on it, while analyzing i am getting an error message by staad please help me...

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 01-Jan-18
END JOB INFORMATION
INPUT WIDTH 79
UNIT METER KN
JOINT COORDINATES
1 0 0 0; 2 6.15 2e-016 -1.1e-015; 3 1.5e-015 2e-016 6.15;
4 0.402229 3e-016 6.13683; 5 0.802736 3e-016 6.09739; 6 1.19981 3e-016 6.03183;
7 1.59174 3e-016 5.94044; 8 1.97685 3e-016 5.82362; 9 2.3535 3e-016 5.68186;
10 2.72008 3e-016 5.51577; 11 3.075 3e-016 5.32606; 12 3.41676 3e-016 5.11354;
13 3.74388 3e-016 4.87912; 14 4.05498 3e-016 4.62381;
15 4.34871 3e-016 4.34871; 16 4.62381 3e-016 4.05498;
17 4.87912 3e-016 3.74388; 18 5.11354 3e-016 3.41676; 19 5.32606 3e-016 3.075;
20 5.51577 3e-016 2.72008; 21 5.68186 3e-016 2.3535; 22 5.82362 3e-016 1.97685;
23 5.94044 3e-016 1.59174; 24 6.03183 3e-016 1.19981;
25 6.09739 3e-016 0.802736; 26 6.13683 3e-016 0.402229; 27 8e-016 1e-016 3.25;
28 5e-016 1e-016 1.85; 29 1.3e-015 2e-016 4.65; 30 0.304125 2e-016 4.64004;
31 0.606947 2e-016 4.61022; 32 0.90717 2e-016 4.56065;
33 1.20351 2e-016 4.49156; 34 1.49469 2e-016 4.40322;
35 1.77948 2e-016 4.29604; 36 2.05664 2e-016 4.17046; 37 2.325 2e-016 4.02702;
38 2.5834 2e-016 3.86633; 39 2.83074 3e-016 3.68909; 40 3.06596 3e-016 3.49606;
41 3.28805 3e-016 3.28805; 42 3.49606 3e-016 3.08004;
43 3.67619 3e-016 2.84747; 44 3.86633 2e-016 2.5834; 45 4.02702 2e-016 2.325;
46 4.17046 2e-016 2.05664; 47 4.29604 2e-016 1.77948;
48 4.40322 2e-016 1.49469; 49 4.49156 2e-016 1.20351;
50 4.56065 2e-016 0.90717; 51 4.61022 2e-016 0.606947;
52 4.64004 2e-016 0.304125; 53 4.65 2e-016 -9e-016; 54 0.21256 1e-016 3.24304;
55 0.42421 1e-016 3.2222; 56 0.634044 1e-016 3.18755;
57 0.841162 2e-016 3.13926; 58 1.04468 2e-016 3.07752;
59 1.24372 2e-016 3.00261; 60 1.43744 2e-016 2.91484; 61 1.625 2e-016 2.81458;
62 1.8056 2e-016 2.70228; 63 1.97847 2e-016 2.5784; 64 2.14287 2e-016 2.44348;
65 2.2981 2e-016 2.2981; 66 2.44348 2e-016 2.14287; 67 2.5784 2e-016 1.97847;
68 2.70228 2e-016 1.8056; 69 2.81458 2e-016 1.625; 70 2.91484 2e-016 1.43744;
71 3.00261 2e-016 1.24372; 72 3.07752 2e-016 1.04468;
73 3.13926 2e-016 0.841162; 74 3.18755 1e-016 0.634044;
75 3.2222 1e-016 0.42421; 76 3.24304 1e-016 0.21256; 77 3.25 1e-016 -6e-016;
78 0.120996 1e-016 1.84604; 79 0.241473 1e-016 1.83417;
80 0.360917 1e-016 1.81445; 81 0.478815 1e-016 1.78696;
82 0.594663 1e-016 1.75182; 83 0.707964 1e-016 1.70918;
84 0.818234 1e-016 1.65921; 85 0.925 1e-016 1.60215; 86 1.0278 1e-016 1.53822;
87 1.12621 1e-016 1.4677; 88 1.21979 1e-016 1.3909; 89 1.30815 1e-016 1.30815;
90 1.3909 1e-016 1.21979; 91 1.4677 1e-016 1.12621; 92 1.53822 1e-016 1.0278;
93 1.60215 1e-016 0.925; 94 1.65921 1e-016 0.818234;
95 1.70918 1e-016 0.707964; 96 1.75182 1e-016 0.594663;
97 1.78696 1e-016 0.478815; 98 1.81445 1e-016 0.360917;
99 1.83417 1e-016 0.241473; 100 1.84604 1e-016 0.120996;
101 1.84604 1e-016 -3e-016; 102 6.15 -3.6 -1.1e-015; 103 1.5e-015 -3.6 6.15;
104 0 -3.6 0; 105 1.84604 -3.6 -3e-016;
MEMBER INCIDENCES
3 3 4; 4 4 5; 5 5 6; 6 6 7; 7 7 8; 8 8 9; 9 9 10; 10 10 11; 11 11 12; 12 12 13;
13 13 14; 14 14 15; 15 15 16; 16 16 17; 17 17 18; 18 18 19; 19 19 20; 20 20 21;
21 21 22; 22 22 23; 23 23 24; 24 24 25; 25 25 26; 26 26 2; 27 27 28; 28 29 30;
29 30 31; 30 31 32; 31 32 33; 32 33 34; 33 34 35; 34 35 36; 35 36 37; 36 37 38;
37 38 39; 38 39 40; 39 40 41; 40 41 42; 41 42 43; 42 43 44; 43 44 45; 44 45 46;
45 46 47; 46 47 48; 47 48 49; 48 49 50; 49 50 51; 50 51 52; 51 52 53; 52 27 54;
53 54 55; 54 55 56; 55 56 57; 56 57 58; 57 58 59; 58 59 60; 59 60 61; 60 61 62;
61 62 63; 62 63 64; 63 64 65; 64 65 66; 65 66 67; 66 67 68; 67 68 69; 68 69 70;
69 70 71; 70 71 72; 71 72 73; 72 73 74; 73 74 75; 74 75 76; 75 76 77; 76 28 78;
77 78 79; 78 79 80; 79 80 81; 80 81 82; 81 82 83; 82 83 84; 83 84 85; 84 85 86;
85 86 87; 86 87 88; 87 88 89; 88 89 90; 89 90 91; 90 91 92; 91 92 93; 92 93 94;
93 94 95; 94 95 96; 95 96 97; 96 97 98; 97 98 99; 98 99 100; 99 100 101;
104 48 72; 105 72 96; 107 67 43; 108 62 38; 109 57 33; 110 33 7; 111 38 12;
112 43 17; 113 48 22; 115 91 67; 117 86 62; 119 81 57; 120 1 28; 121 27 29;
122 29 3; 123 1 101; 124 101 77; 125 77 53; 126 53 2; 127 2 102; 128 3 103;
129 1 104; 130 101 105;
DEFINE MATERIAL START
ISOTROPIC CONCRETE
E 2.17185e+007
POISSON 0.17
DENSITY 23.5616
ALPHA 1e-005
DAMP 0.05
TYPE CONCRETE
STRENGTH FCU 27579
END DEFINE MATERIAL
MEMBER PROPERTY INDIAN
3 TO 26 PRIS YD 0.3 ZD 0.3
28 TO 99 PRIS YD 0.2 ZD 0.3
127 PRIS YD 0.5 ZD 0.35
128 TO 130 PRIS YD 0.35 ZD 0.5
104 105 107 TO 113 115 117 119 PRIS YD 0.2 ZD 0.2
27 120 TO 126 PRIS YD 0.35 ZD 0.3
SUPPORTS
102 TO 105 FIXED
MEMBER RELEASE
28 52 115 117 119 START MZ
51 75 105 110 TO 113 END MZ
LOAD 1 LOADTYPE Dead TITLE DEAD LOAD
SELFWEIGHT Y -1
LOAD 3 LOADTYPE Live REDUCIBLE TITLE LIVE LOAD
MEMBER LOAD
3 TO 99 104 105 107 TO 113 115 117 119 TO 126 UNI GY -2
LOAD COMB 2 1.5(DL+LL)
1 1.5 3 1.5
PERFORM ANALYSIS
START CONCRETE DESIGN
CODE INDIAN
FC 20000 ALL
FYMAIN 500000 ALL
FYSEC 500000 ALL
DESIGN BEAM 3 TO 99 104 105 107 TO 113 115 117 119 TO 126
DESIGN COLUMN 127 TO 130
END CONCRETE DESIGN
LOAD LIST 2
PERFORM ANALYSIS
FINISH