Error on complex view about devtools-v6 HOT 4 CLOSED

function setPanelContent() {
    if ($0) {
        var el = $0
        var instance = el.__vue__
        while ((!instance || instance._isAnonymous) && el.parentNode) {
            el = el.parentNode
            instance = el.__vue__
        }
        if (!instance) {
            return {}
        } else {
            window.$vue = instance
            var state = {}
            var meta = ['$value', '$index', '$key']
            for (var key in instance) {
                if (key.charAt(0) === '_') continue
                if (key.charAt(0) === '$' && meta.indexOf(key) < 0) continue
                if (typeof instance[key] === 'function') continue
                if (instance.hasOwnProperty(key)) {
                    state[key] = instance[key]
                } else {
                    (state.$$scope = (state.$$scope || {}))[key] = instance[key]
                }
            }
            return {
                $$owner: instance,
                view: state
            }
        }
    } else {
        return {}
    }
}