提交代码，解决问题。

Signed-off-by: zouap <zouap@pcl.ac.cn>

routers/repo/attachment_model.go

@@ -144,13 +144,11 @@ func GetModelChunks(ctx *context.Context) {
 	if dbmodeluuid != modeluuid {
 		log.Info("The file has uploaded.fileChunk.ObjectName=" + fileChunk.ObjectName + " typeCloudBrain=" + fmt.Sprint(typeCloudBrain))
 		isExist := copyModelAttachmentFile(typeCloudBrain, fileChunk, fileName, modeluuid)
-		if dbmodeluuid != "" {
-			model, err := models.QueryModelById(dbmodeluuid)
+		if isExist {
+			model, err := models.QueryModelById(modeluuid)
 			if err == nil && model != nil {
 				modelname = model.Name
 			}
-		}
-		if isExist {
 			ctx.JSON(200, map[string]string{
 				"uuid":      fileChunk.UUID,
 				"uploaded":  strconv.Itoa(fileChunk.IsUploaded),