问题：
I'm having an error running Chromecast sender in Chrome Incognito or if Chromecast extension is not installed: 我在Chrome Incognito中运行Chromecast发送器时出错，或者未安装Chromecast扩展程序：
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发送者正在尝试发送本地“ cast_sender.js”的AJAX请求。 Should this happen or is there a better way to check if Chromecast sender extension exists (not by requesting AJAX request)? 应该发生这种情况还是有更好的方法来检查Chromecast发件人扩展名是否存在（不是通过请求AJAX请求）？
I believe these AJAX requests are a way of asking if Chromecast extension exists. 我相信这些AJAX请求是询问Chromecast扩展是否存在的一种方式。 Is there a better way to check if Chromecast extension exists? 有没有更好的方法来检查Chromecast扩展程序是否存在？
解决方案：
参考一： https://en.stackoom.com/question/1el3D参考二： https://stackoom.com/question/1el3D