chore: optimize table preview

@@ -114,7 +114,7 @@ func (d *FilePreviewDto) Load(fileId int, m *domain.DataLoadDataTable, file *red
 	}
 	}
 
 
 	var fields []*domain.Field
 	var fields []*domain.Field
-	mapData := domain.ToFieldData(m.Fields, formatData(m.Data, func(s string) string {
+	mapData := domain.ToFieldData(file.Fields, formatData(m.Data, func(s string) string {
 		if s == "<NA>" {
 		if s == "<NA>" {
 			return ""
 			return ""
 		}
 		}