|  | @@ -57,18 +57,10 @@ export default defineComponent({
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				|  |  |            musicGradeDistributions,
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				|  |  |            subjectGradeDistributions
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				|  |  |          } = res.data;
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				|  |  | -        if (gradeDistributions) {
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				|  |  | -          data.gradeDistributions = gradeDistributions;
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				|  |  | -        }
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				|  |  | -        if (subjectDistributions) {
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				|  |  | -          data.subjectDistributions = subjectDistributions;
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				|  |  | -        }
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				|  |  | -        if (musicGradeDistributions) {
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				|  |  | -          data.musicGradeDistributions = musicGradeDistributions;
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				|  |  | -        }
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				|  |  | -        if (subjectGradeDistributions) {
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				|  |  | -          data.subjectGradeDistributions = subjectGradeDistributions;
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				|  |  | -        }
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				|  |  | +        data.gradeDistributions = gradeDistributions || []
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				|  |  | +        data.subjectDistributions = subjectDistributions || [];
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				|  |  | +        data.musicGradeDistributions = musicGradeDistributions || [];
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				|  |  | +        data.subjectGradeDistributions = subjectGradeDistributions || [];
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				|  |  |        }
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				|  |  |      };
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				|  |  |  
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