Parent element not found!

[tomjamescn]

Web Scraper version: 0.3.8
Chrome version: 70.0.3538.77 64bit
OS: macOS 10.14.1

Sitemap:

{
    "_id":"weibo-spider",
    "startUrl":[
        "https://weibo.com/u/1737841472?is_hot=1"
    ],
    "selectors":[
        {
            "id":"scroll_to_bottom",
            "type":"SelectorElementScroll",
            "parentSelectors":[
                "_root"
            ],
            "selector":"div.WB_feed",
            "multiple":true,
            "delay":"200"
        },
        {
            "id":"click_all_expand_button",
            "type":"SelectorElementClick",
            "parentSelectors":[
                "scroll_to_bottom"
            ],
            "selector":"__parent__",
            "multiple":true,
            "delay":"0",
            "clickElementSelector":"a.WB_text_opt[action-type=fl_unfold]",
            "clickType":"clickOnce",
            "discardInitialElements":false,
            "clickElementUniquenessType":"uniqueCSSSelector"
        }
    ]
}

Error Message:

Parent element not found!

To access error messages follow these steps:

1. add new child selector for click_all_expand_button selector