Error in background script - "Error: browser.tabs is undefined"

I'm tring to send message from background script to content script after user click on browser action button. But I get error after that action - Error: browser.tabs is undefined".

manifest:

"browser_action": {
        "default_icon": "./icons/browser-a-64.png",
        "default_title": "Znajdź projekty!"
    },
"permissions": ["notifications", "tabs"],
    
    "content_scripts": [{
        "matches": ["*://*.mydomain.com/*"],
        "js": ["./scripts/content_script.js"]
    }], 
    "background": {
        "scripts": ["./scripts/background-script.js"]
    }

content script:

const scanDOM = (msg) => { console.log;}
browser.runtime.onMessage.addListener(scanDOM);

background:

const triggerScan = (t) => {
    browser.tabs.sendMessage(t.id,{"scan": "ok"});
}

browser.runtime.onMessage.addListener(showNoty);

browser.browserAction.onClicked.addListener(triggerScan);