I found a bug to report

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Steps to reproduce

Copied the code directly from the guide produced by this repository https://telegrambots.github.io/book/2/reply-markup.html. Tried to compile the application and it failed.

Actual code used instead of photo in Program.cs:

using System.Threading;
using Telegram.Bot;
using Telegram.Bot.Exceptions;
using Telegram.Bot.Polling;
using Telegram.Bot.Types;
using Telegram.Bot.Types.Enums;
using Telegram.Bot.Types.ReplyMarkups;

namespace TgramBotTutorial;

class Program
{
    private static string API_KEY = "<INSERT_API_KEY>";
    private static long ChannelId = <REPLACE_WITH_CHANNEL_ID>;
    private static readonly TelegramBotClient botClient = new(API_KEY);

    static async Task Main(string[] args)
    {
        long chatId = ChannelId;
        CancellationToken cancellationToken = CancellationToken.None;

        ReplyKeyboardMarkup replyKeyboardMarkup = new(new[]
        {
            new KeyboardButton[] { "Help me", "Call me ☎️" },
        })
        {
            ResizeKeyboard = true
        };

        Message sentMessage = await botClient.SendTextMessageAsync(
            chatId: chatId,
            text: "Choose a response",
            replyMarkup: replyKeyboardMarkup,
            cancellationToken: cancellationToken);
    }
}

Expected behavior

The CLI tool would send a message to the channel like a normal message. The channel ID is correct, as I have been following steps from other areas of the guide with no problem. This is specifically targeting the Custom Keyboards. Inline Keyboards are compiling and running as expected.

Actual behavior

Click Run in Visual Studio and error happens when reaches the example code. Won't send message.

Error code: Telegram.Bot.Exceptions.ApiRequestException: "Bad Request: inline keyboard expected" at Telegram.Bot.TelegramBotClient.<MakeRequestAsync>d__211.MoveNext()\n at Telegram.Bot.TelegramBotClientExtensions.d7.MoveNext()\n at TgramBotTutorial.Program.

d3.MoveNext() in /Projects/TgramBotTutorial/Program.cs:30`

Screenshots

Environment data

NuGet Package Version: 19.0.0

.NET Version: 7.0.302

IDE: Visual Studio 2022 for Mac, Version 17.5.5 (build 12)

App: Compiled as a CLI application on macOS

TelegramBots / Telegram.Bot

Unable to send Custom Keyboard to channel #1262