The router, path in vue is displayed correctly but the content is not displayed. What is the problem?

use the < router-view > < / router-view >
path to display correctly but the content cannot be displayed and the error is not reported. I don"t know what the problem is.

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the route is changed to this:

menus.forEach(item => {
  var childArr = item.childs;
  childArr.forEach(sub => {
    routes.push({
      path: `@/demos/${sub.entity.componentName}`,
      name: sub.entity.name,
      component: () => import(`@/demos/${sub.entity.componentName}`)
    })
    console.log("aaa" + sub.entity.componentName)
  })
});

now I don"t know where the problem is, and I don"t know how to start.
here is the menu:

module.exports = [
        {
            "entity": {
                "id": 1,
                "parentMenuId": 0,
                "name": "systemManage",
                "componentName": "SystemManage",
                "alias": "",
                "state": "ENABLE",
                "sort": 0,
                "value": null,
                "type": "NONE",
                "discription": "",
                "createUserId": 1
            },
            "childs": [
                {
                    "entity": {
                        "id": 3,
                        "parentMenuId": 1,
                        "name": "authManage",
                        "componentName": "AuthManage",
                        "icon": "el-icon-loading",
                        "alias": "",
                        "state": "ENABLE",
                        "sort": 0,
                        "value": "/system/auth",
                        "type": "LINK",
                        "discription": "",
                        "createUserId": 1
                    },
                    "childs": null
                },
                {
                    "entity": {
                        "id": 4,
                        "parentMenuId": 1,
                        "name": "roleManage",
                        "componentName": "RoleManage",
                        "icon": "el-icon-bell",
                        "alias": "",
                        "state": "ENABLE",
                        "sort": 1,
                        "value": "/system/role",
                        "type": "LINK",
                        "discription": "",
                        "createUserId": 1
                    }
                  }
                }
            ]
        }
    ]

Dec.31,2021

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if the key points are circled in the figure, the routing address you visit should be / system/auth to

.
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b32d51-2be5e.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b32d51-2be5e.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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