Selector doesn't appear after clicking "Select"

Web Scraper version: 0.3.7
Chrome version: 67.0.3396.62(Official Build) (64 bit)
OS: windows 8.1

Sitemap:

{"_id":"google","startUrl":["https://www.google.co.jp/search?q=%2FTableau+file"],"selectors":[{"id":"","type":"SelectorText","selector":"","parentSelectors":["_root"],"multiple":false,"regex":"","delay":0}]}

Error Message:

Error in response to tabs.query: TypeError: Cannot read property 'log' of undefined
    at Object.callback (chrome-extension://jnhgnonknehpejjnehehllkliplmbmhn/background_script.js:24:262405)
    at Promise (chrome-extension://jnhgnonknehpejjnehehllkliplmbmhn/background_script.js:24:262331)
    at o.getCurrentlyActiveTab (chrome-extension://jnhgnonknehpejjnehehllkliplmbmhn/background_script.js:24:262299)
    at o.<anonymous> (chrome-extension://jnhgnonknehpejjnehehllkliplmbmhn/background_script.js:24:262691)
    at chrome-extension://jnhgnonknehpejjnehehllkliplmbmhn/background_script.js:24:262186

Hi!

One question -- do you have your scraper docked to bottom side/right side of a browser window or have it undocked as separate window?
image

If you have it undocked to separate window, you will be able only to call a scrape but not set selectors.

P.S. upcoming release of WebScraper will support undocked separate window