There are flags we do not have

[danbilokha]

Library either import {flag} from 'country-emoji' doesn't have all flags or we just give it in a wrong format. Figure it out.

Debugging hints. Past following code

const single = countries
                .map(c => flag(c.name))
                .filter(v => !!v) // Without this line you could see that some flags are missing 
                .join('|');

            console.log('single', single);
            bot.sendMessage(
                384590146,
                single
            );

in telegram\index.ts
inside

getAvailableCountries()
        .then((countries: Array<Country>) => {