Want to calculate the viscosity of ZrO2 but error in data file

We want to use LAMMPS to calculate the viscosity of ZrO2. Our method is to import the structure first, but there was an error in this step. The data file keeps reporting errors and cannot be read. Therefore, we hope to receive your help. If you have any other methods for calculating viscosity using LAMMPS, we also welcome your guidance.
The data file is as follows:

78 atoms
77 bonds

196 angles
0 dihedrals
0 impropers

 3 atom types
 2 bond types
22 angle types
 0 dihedral types
 0 improper types

-1.27250    18.72750  xlo xhi
-1.27250    18.72750  ylo yhi
-1.27250    18.72750  zlo zhi

Masses

1 91.2236
2 15.9994
3 15.9994

Pair Coeffs

1 0.069000 2.783168
2 0.060000 3.118146
3 0.060000 3.118146

Bond Coeffs
1 313.050000 2.200000
2 303.380000 2.200000

Angle Coeffs

1 355.222753 70.529000
2 100.468690 109.471000
3 20.508126 180.000000
4 100.461759 109.472000
5 355.158461 70.531000
6 20.507409 179.998000
7 100.472753 109.467000
8 355.244981 70.527000
9 355.180927 70.529000
10 20.506453 179.996000
11 100.465822 109.468000
12 100.454828 109.473000
13 355.179732 70.525000
14 100.458891 109.469000
15 355.203155 70.527000
16 20.505736 179.996000
17 50.227533 109.473000
18 50.230880 109.472000
19 255.368547 109.472000
20 255.385994 109.471000
21 255.378585 109.468000
22 255.396033 109.467000

Atoms
1 1 1 0.000000 0.000000 0.000000 0.000000
2 1 1 0.000000 0.000000 0.000000 5.090100
3 1 1 0.000000 0.000000 5.090100 0.000000
4 1 1 0.000000 0.000000 5.090100 5.090100
5 1 1 0.000000 5.090100 0.000000 0.000000
6 1 1 0.000000 5.090100 0.000000 5.090100
7 1 1 0.000000 5.090100 5.090100 0.000000
8 1 1 0.000000 5.090100 5.090100 5.090100
9 1 1 0.000000 0.000000 2.545100 2.545100
10 1 1 0.000000 5.090100 2.545100 2.545100
11 1 1 0.000000 2.545100 0.000000 2.545100
12 1 1 0.000000 2.545100 5.090100 2.545100
13 1 1 0.000000 2.545100 2.545100 0.000000
14 1 1 0.000000 2.545100 2.545100 5.090100
15 1 2 0.000000 3.817600 1.272500 3.817600
16 1 2 0.000000 3.817600 3.817600 3.817600
17 1 2 0.000000 3.817600 3.817600 1.272500
18 1 2 0.000000 3.817600 1.272500 1.272500
19 1 3 0.000000 1.272500 1.272500 1.272500
20 1 2 0.000000 1.272500 3.817600 1.272500
21 1 2 0.000000 1.272500 3.817600 3.817600
22 1 2 0.000000 1.272500 1.272500 3.817600
23 1 2 0.000000 -1.272500 -1.272500 -1.272500
24 1 3 0.000000 -1.272500 -1.272500 1.272500
25 1 3 0.000000 -1.272500 1.272500 -1.272500
26 1 3 0.000000 -1.272500 1.272500 1.272500
27 1 3 0.000000 1.272500 -1.272500 -1.272500
28 1 3 0.000000 1.272500 -1.272500 1.272500
29 1 2 0.000000 1.272500 1.272500 -1.272500
30 1 3 0.000000 -1.272500 -1.272500 3.817600
31 1 3 0.000000 -1.272500 -1.272500 6.362700
32 1 3 0.000000 -1.272500 1.272500 3.817600
33 1 3 0.000000 -1.272500 1.272500 6.362700
34 1 3 0.000000 1.272500 -1.272500 3.817600
35 1 3 0.000000 1.272500 -1.272500 6.362700
36 1 3 0.000000 1.272500 1.272500 6.362700
37 1 2 0.000000 -1.272500 3.817600 -1.272500
38 1 2 0.000000 -1.272500 3.817600 1.272500
39 1 3 0.000000 -1.272500 6.362700 -1.272500
40 1 3 0.000000 -1.272500 6.362700 1.272500
41 1 3 0.000000 1.272500 3.817600 -1.272500
42 1 3 0.000000 1.272500 6.362700 -1.272500
43 1 3 0.000000 1.272500 6.362700 1.272500
44 1 3 0.000000 -1.272500 3.817600 3.817600
45 1 3 0.000000 -1.272500 3.817600 6.362700
46 1 3 0.000000 -1.272500 6.362700 3.817600
47 1 3 0.000000 -1.272500 6.362700 6.362700
48 1 2 0.000000 1.272500 3.817600 6.362700
49 1 2 0.000000 1.272500 6.362700 3.817600
50 1 3 0.000000 1.272500 6.362700 6.362700
51 1 2 0.000000 3.817600 -1.272500 -1.272500
52 1 2 0.000000 3.817600 -1.272500 1.272500
53 1 3 0.000000 3.817600 1.272500 -1.272500
54 1 3 0.000000 6.362700 -1.272500 -1.272500
55 1 3 0.000000 6.362700 -1.272500 1.272500
56 1 3 0.000000 6.362700 1.272500 -1.272500
57 1 3 0.000000 6.362700 1.272500 1.272500
58 1 3 0.000000 3.817600 -1.272500 3.817600
59 1 3 0.000000 3.817600 -1.272500 6.362700
60 1 2 0.000000 3.817600 1.272500 6.362700
61 1 3 0.000000 6.362700 -1.272500 3.817600
62 1 3 0.000000 6.362700 -1.272500 6.362700
63 1 2 0.000000 6.362700 1.272500 3.817600
64 1 3 0.000000 6.362700 1.272500 6.362700
65 1 3 0.000000 3.817600 3.817600 -1.272500
66 1 3 0.000000 3.817600 6.362700 -1.272500
67 1 2 0.000000 3.817600 6.362700 1.272500
68 1 3 0.000000 6.362700 3.817600 -1.272500
69 1 2 0.000000 6.362700 3.817600 1.272500
70 1 3 0.000000 6.362700 6.362700 -1.272500
71 1 3 0.000000 6.362700 6.362700 1.272500
72 1 2 0.000000 3.817600 3.817600 6.362700
73 1 3 0.000000 3.817600 6.362700 3.817600
74 1 3 0.000000 3.817600 6.362700 6.362700
75 1 2 0.000000 6.362700 3.817600 3.817600
76 1 3 0.000000 6.362700 3.817600 6.362700
77 1 3 0.000000 6.362700 6.362700 3.817600
78 1 3 0.000000 6.362700 6.362700 6.362700

Bonds
1 1 66 7
2 1 65 13
3 1 42 3
4 1 41 13
5 1 39 3
6 1 68 7
7 1 70 7
8 1 27 1
9 1 25 1
10 1 53 13
11 1 54 5
12 1 56 5
13 1 1 28
14 1 1 26
15 1 1 24
16 1 1 19
17 1 3 43
18 1 3 40
19 2 3 38
20 2 3 20
21 1 5 57
22 1 5 55
23 2 5 52
24 2 5 18
25 2 13 17
26 1 7 71
27 2 7 67
28 2 7 69
29 2 38 9
30 2 67 12
31 2 69 10
32 2 52 11
33 2 20 9
34 2 18 11
35 2 17 12
36 1 9 44
37 1 9 32
38 2 9 21
39 2 10 63
40 2 10 75
41 1 11 58
42 1 11 34
43 2 11 22
44 2 11 15
45 2 12 49
46 2 12 16
47 1 12 73
48 1 61 6
49 2 49 4
50 2 63 6
51 1 46 4
52 1 30 2
53 2 22 2
54 2 21 14
55 2 16 14
56 2 15 14
57 2 75 8
58 1 77 8
59 1 2 33
60 1 2 31
61 1 2 35
62 1 2 36
63 1 4 45
64 1 4 47
65 2 4 48
66 1 4 50
67 1 6 59
68 1 6 64
69 1 6 62
70 2 6 60
71 1 8 78
72 1 8 76
73 1 8 74
74 2 8 72
75 2 14 72
76 2 14 48
77 2 14 60

Angles
1 1 27 1 28
2 2 25 1 27
3 3 25 1 28
4 1 25 1 26
5 3 26 1 27
6 2 26 1 28
7 2 24 1 27
8 2 24 1 25
9 1 24 1 28
10 1 24 1 26
11 2 19 1 27
12 2 19 1 25
13 1 19 1 28
14 1 19 1 26
15 2 19 1 24
16 4 30 2 33
17 5 30 2 31
18 4 30 2 35
19 6 30 2 36
20 2 22 2 30
21 4 22 2 33
22 6 22 2 31
23 4 22 2 35
24 5 22 2 36
25 7 33 2 35
26 8 33 2 36
27 8 31 2 33
28 8 31 2 35
29 7 31 2 36
30 8 35 2 36
31 8 42 3 43
32 8 39 3 42
33 7 39 3 43
34 8 39 3 40
35 7 40 3 42
36 8 40 3 43
37 6 38 3 42
38 4 38 3 39
39 4 38 3 43
40 5 38 3 40
41 4 20 3 42
42 6 20 3 39
43 5 20 3 43
44 4 20 3 40
45 1 20 3 38
46 9 49 4 50
47 8 46 4 49
48 9 46 4 47
49 10 46 4 48
50 11 46 4 50
51 10 45 4 49
52 12 45 4 46
53 9 45 4 47
54 8 45 4 48
55 11 45 4 50
56 11 47 4 49
57 11 47 4 48
58 13 47 4 50
59 12 48 4 49
60 9 48 4 50
61 8 54 5 56
62 7 54 5 57
63 8 54 5 55
64 8 56 5 57
65 7 55 5 56
66 8 55 5 57
67 4 52 5 54
68 6 52 5 56
69 4 52 5 57
70 5 52 5 55
71 6 18 5 54
72 4 18 5 56
73 5 18 5 57
74 4 18 5 55
75 1 18 5 52
76 8 61 6 63
77 11 61 6 64
78 9 61 6 62
79 9 63 6 64
80 12 59 6 61
81 10 59 6 63
82 11 59 6 64
83 9 59 6 62
84 8 59 6 60
85 11 62 6 63
86 13 62 6 64
87 10 60 6 61
88 12 60 6 63
89 9 60 6 64
90 11 60 6 62
91 12 66 7 68
92 9 66 7 70
93 11 66 7 71
94 8 66 7 67
95 10 66 7 69
96 9 68 7 70
97 11 68 7 71
98 8 68 7 69
99 13 70 7 71
100 10 67 7 68
101 11 67 7 70
102 9 67 7 71
103 12 67 7 69
104 11 69 7 70
105 9 69 7 71
106 9 75 8 77
107 14 75 8 78
108 9 75 8 76
109 15 77 8 78
110 14 76 8 77
111 15 76 8 78
112 16 74 8 75
113 14 74 8 77
114 15 74 8 78
115 14 74 8 76
116 12 72 8 75
117 16 72 8 77
118 14 72 8 78
119 9 72 8 76
120 9 72 8 74
121 5 38 9 44
122 8 20 9 38
123 4 20 9 44
124 10 20 9 32
125 5 20 9 21
126 12 32 9 38
127 5 32 9 44
128 4 21 9 38
129 1 21 9 44
130 4 21 9 32
131 9 69 10 75
132 14 63 10 69
133 9 63 10 75
134 5 52 11 58
135 8 18 11 52
136 4 18 11 58
137 10 18 11 34
138 12 18 11 22
139 12 34 11 52
140 5 34 11 58
141 10 22 11 52
142 4 22 11 58
143 8 22 11 34
144 4 15 11 52
145 5 15 11 18
146 1 15 11 58
147 4 15 11 34
148 5 15 11 22
149 9 67 12 73
150 9 17 12 67
151 16 17 12 49
152 12 17 12 73
153 14 49 12 67
154 9 49 12 73
155 12 16 12 67
156 5 16 12 17
157 12 16 12 49
158 5 16 12 73
159 5 41 13 65
160 17 41 13 53
161 5 53 13 65
162 1 17 13 65
163 18 17 13 41
164 18 17 13 53
165 12 21 14 72
166 9 21 14 48
167 16 21 14 60
168 5 16 14 21
169 5 16 14 72
170 12 16 14 48
171 12 16 14 60
172 12 15 14 21
173 5 15 14 16
174 12 15 14 72
175 16 15 14 48
176 9 15 14 60
177 9 48 14 72
178 14 48 14 60
179 9 60 14 72
180 19 11 15 14
181 20 12 16 14
182 19 12 17 13
183 19 5 18 11
184 19 3 20 9
185 19 9 21 14
186 19 2 22 11
187 19 3 38 9
188 21 4 48 14
189 21 4 49 12
190 19 5 52 11
191 21 6 60 14
192 21 6 63 10
193 21 7 67 12
194 21 7 69 10
195 22 8 72 14
196 22 8 75 10

What error?

We copy the data file into the command execution window,and the first line reports an error. The result given is ‘error:unknown command:78 atoms’. And I would like to know if there are any issues with my operating method .Thank you for your reply.

I am not sure what you are doing, but such data file can be called from a LAMMPS input file using the read_data command.

edit: my guess is that you are trying to run a LAMMPS data file directly as if it were an input, but I may be wrong, you are not providing enough details of what you are doing

The method we initially chose was to input an in file, but the error message stated that we could not read the data file, so we chose to copy the data file directly into the command window to find the error.
We are using LAMMPS software for the first time and are not very familiar with the process, so we would like to ask what are the correct steps for you to run LAMMPS, if it is convenient for you. Thank you very much for your answer.

You just need to follow online tutorials: LAMMPS Tutorials

This is all documented in the LAMMPS manual. You cannot just guess and hope for the best.

As @simongravelle already suggested, the best way to get started is to work your way through some of the tutorials (while comparing what the tutorial says with the manual for additional insight) until you are certain what the correct steps are.

Thank you for you help!