在注入的代码中，相对路径(例如"SVG/home-outline.svg")指向您要注入的站点.

In the injected code, relative paths like "SVG/home-outline.svg" point to the site you're injecting to.

您需要扩展中资源的完整路径.很容易得到它: chrome.runtime.getURL("SVG/home-outline.svg")可以完成工作.

You need a full path to the resource in your extension. It's easy to get it: chrome.runtime.getURL("SVG/home-outline.svg") does the job.