問題：
I'm having an error running Chromecast sender in Chrome Incognito or if Chromecast extension is not installed: 我在Chrome Incognito中運行Chromecast發送器時出錯，或者未安裝Chromecast擴展程序：
Failed to load resource: net::ERR_ADDRESS_UNREACHABLE chrome-extension://boadgeojelhgndaghljhdicfkmllpafd/cast_sender.js
Failed to load resource: net::ERR_ADDRESS_UNREACHABLE chrome-extension://dliochdbjfkdbacpmhlcpmleaejidimm/cast_sender.js
Failed to load resource: net::ERR_ADDRESS_UNREACHABLE chrome-extension://hfaagokkkhdbgiakmmlclaapfelnkoah/cast_sender.js
Failed to load resource: net::ERR_ADDRESS_UNREACHABLE chrome-extension://fmfcbgogabcbclcofgocippekhfcmgfj/cast_sender.js
Failed to load resource: net::ERR_ADDRESS_UNREACHABLE chrome-extension://enhhojjnijigcajfphajepfemndkmdlo/cast_sender.js
No cast extension found
Google cast sender is trying to send AJAX requests for local "cast_sender.js". Google Cast發送者正在嘗試發送本地“ cast_sender.js”的AJAX請求。 Should this happen or is there a better way to check if Chromecast sender extension exists (not by requesting AJAX request)? 應該發生這種情況還是有更好的方法來檢查Chromecast發件人擴展名是否存在（不是通過請求AJAX請求）？
I believe these AJAX requests are a way of asking if Chromecast extension exists. 我相信這些AJAX請求是詢問Chromecast擴展是否存在的一種方式。 Is there a better way to check if Chromecast extension exists? 有沒有更好的方法來檢查Chromecast擴展程序是否存在？
解決方案：
參考一： https://en.stackoom.com/question/1el3D參考二： https://stackoom.com/question/1el3D