GetSelfUserInfo: Handle the case where the user does not exist

internal/api/user/user.go

@@ -366,11 +366,10 @@ func GetSelfUserInfo(c *gin.Context) {
 		log.NewInfo(req.OperationID, "GetUserInfo api return ", resp)
 		c.JSON(http.StatusOK, resp)
 	} else {
-		resp := api.GetSelfUserInfoResp{CommResp: api.CommResp{ErrCode: RpcResp.CommonResp.ErrCode, ErrMsg: RpcResp.CommonResp.ErrMsg}}
+		resp := api.GetSelfUserInfoResp{CommResp: api.CommResp{ErrCode: constant.ErrDB.ErrCode, ErrMsg: constant.ErrDB.ErrMsg}}
 		log.NewInfo(req.OperationID, "GetUserInfo api return ", resp)
 		c.JSON(http.StatusOK, resp)
 	}
-
 }
 
 // @Summary 获取用户在线状态