Warning: Use of undefined constant BOT_TOKEN - assumed 'BOT_TOKEN' (this will throw an Error in a future version of PHP) in /var/www/html/tgh/api_bot/channel/send_to_channel.php on line 16

Notice: Undefined index: param_chat_id in /var/www/html/tgh/api_bot/channel/send_to_channel.php on line 22
Exception unreal4u\TelegramAPI\Exceptions\ClientException caught, message: Not Found