问获得“未捕获(承诺中)错误: firefox扩展的后台脚本中的选项卡”缺少主机权限

EN

/**
 * CSS to hide everything on the page,
 */
const hidePage = `body > : {
    display: none;
  }`;


/**
 * When a tab is loaded, check if the plugin is on. If the plugin is on, check if the url matches the page.
 * If it does, block it
 */
browser.tabs.onActivated.addListener(function (activeInfo) {
    browser.storage.local.get("onOff")
        .then((result) => {
            if (Object.entries(result).length === 0 || !result.onOff.value) {
                return;
            }
            browser.tabs.query({ currentWindow: true, active: true }).then((tabs) => {
                let tab = tabs[0];
                console.log(tab.url);
                browser.tabs.insertCSS({code: hidePage})
            }, console.error)
        });
});

{

    "manifest_version": 2,
    "name": "Beastify",
    "version": "1.0",
  
    "description": "Adds a browser action icon to the toolbar. Click the button to choose a beast. The active tab's body content is then replaced with a picture of the chosen beast. See https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Examples#beastify",
    "homepage_url": "https://github.com/mdn/webextensions-examples/tree/master/beastify",
    "icons": {
      "48": "icons/beasts-48.png"
    },
  
    "permissions": [
      "tabs",
      "activeTab",
      "storage"
    ],
  
    "browser_action": {
      "default_icon": "icons/beasts-32.png",
      "default_title": "BlockIt",
      "default_popup": "popup/blockit.html"
    },

    "background": {
      "scripts": ["background_scripts/blocker.js"]
    },
  
    "web_accessible_resources": [
      "beasts/frog.jpg",
      "beasts/turtle.jpg",
      "beasts/snake.jpg"
    ]
  
  }