You see this page because your website doesn't have "index.php" or "index.html" file in public_html folder.
Create index file
What's next? Simply upload your app-1512562562.000webhostapp.com website to public_html folder. Looking for more ideas? Check this out:
Simply build beautiful websites with an Easy Website Builder in just a few clicks.Click & learn more
Upload all your website files using fast online file manager or do it via FTP.Click & learn more