Fix UnknownHostException

✅ Solution

UnknownHostException in Selenium usually means the hostname (like a download server address) can't be resolved to an IP address, indicating a DNS resolution failure. Fix this by ensuring your machine has a working internet connection and that your DNS settings are correctly configured, potentially by specifying a public DNS server like Google's (8.8.8.8) in your network settings. You can also try flushing your local DNS cache.