Error when using timer?

Question

Node.js

(node:94092) UnhandledPromiseRejectionWarning: TypeError [ERR_INVALID_CALLBACK]: Callback must be a function. Received "count_connect++;await browser.close();console.log('[!] The script has disconnected from http://instalovex.ru. Pr
oxies used');browser_connect();"

setTimeout("count_connect++;await browser.close();console.log('[!] The script has disconnected from http://instalovex.ru. Proxies used');browser_connect();", 14000);

Answer 1

Error when using timer?
Yes, it's a mistake, right.
If you could put questions without a question mark, would you put the heading "Error using timer"? Why is this information here?
Besides, you clearly wrote "Callback must be a function".
Line

"count_connect++;await browser.close();console.log('[!] The script has disconnected from http://instalovex.ru. Proxies used');browser_connect();"

is not a function, but a string
You need:

setTimeout(() => {
  count_connect++;
  await browser.close();
  console.log('[!] The script has disconnected from http://instalovex.ru. Proxies used');
  browser_connect();
}, 14000)

Answer 2

Write a function:

setTimeout(async () => {
    count_connect++;
    await browser.close();
    console.log('[!] The script has disconnected from http://instalovex.ru. Proxies used');
    browser_connect();
}, 14000);