需要帮助说'background.service_worker'的这个无效值。无法加载清单

Question

当尝试加载扩展时出现

“background.service_worker”的值无效。 无法加载清单。

这是我的代码

{
    "manifest_version": 3,
    "name": "test",
    "version": "1.0",
    "description": "test",
    "permissions": [ "webRequest",  "webRequestBlocking","<all_urls>" ],
    "background": {
      "service_worker": ["background.py"]
      },
      "icons": {
        "16": "icon16.png",
        "48": "icon48.png",
        "128": "icon128.png"
      },
      "browser_action": {
        "default_icon": "icon16.png",
        "default_popup": "popup.html"
      }
    }

我尝试了我需要帮助的一切