Table表格不展示数据报错 TypeError: Cannot read properties of null (reading '_isChecked')

[news-ttt]

 columns: [
            {title: '名称', key: 'name', slot: 'name', tree: true},
            {title: '种类', key: 'type', slot: 'type'},
            {title: '以太网口类型', key: 'Physics', slot: 'physics'},
            {title: '操作', align: 'center', slot: 'action'},
        ],


data : [
    {
        "name": "Servo Drives",
        "type": "InoServo",
        "Physics": "",
        "children": [
            {
                "name": "IS620N_ECAT_v2.6.8",
                "type": "IS620N",
                "Physics": "YY"
            },
            {
                "name": "IS620N_ECAT_v6.9.2",
                "type": "IS620N",
                "Physics": "YY"
            }
        ]
    },
    {
        "name": "Terminal Coupler(IO耦合器)",
        "type": "TerminalCoupler",
        "Physics": "",
        "children": [
            {
                "name": "AM600-RTU-ECTA_2.0.5.0",
                "type": "AM600-RTU-ECTA",
                "Physics": "YY"
            },
            {
                "name": "GL10-RTU-ECTA_2.0.5.0",
                "type": "GL10-RTU-ECTA",
                "Physics": "YY"
            }
        ]
    }
]