Fix: Empty Message Error in Telegram Quiz Bot When Sending Questions

[Azizjon003]

Bug Description

When sending quiz questions to QuizBot, sometimes the function throws an error: "The message cannot be empty unless a file is provided"

Current Behavior

• Function fails with error: "Error sending quiz: Error: The message cannot be empty"
• Quiz sending process stops
• Question object is logged but message isn't sent

Steps to Reproduce

1. Load questions from JSON file
2. Start sending quiz questions to QuizBot
3. Error occurs when trying to send specific questions

Error Log

Error sending quiz: Error: The message cannot be empty unless a file is provided
Question index: 1
Question: {
  index: 2,
  question: "Tashkilot tarmoq resurslaridan...",
  answers: [...],
  correct_index: 0,
  type: 'short'
}

code

async function sendQuiz(client, index) {
  const question = questions[index];
  try {
    if (!question || !question.question || !question.answers) {
      console.error("Invalid question format at index:", index);
      return;
    }
    if (question.type === "long") {
      const questionText = html.escape(question.question);
      let answers = [...question.answers];
      answers = shuffleArray(answers);
      const correctAnswer = question.answers[question.correct_index];
      const correctIndex = answers.indexOf(correctAnswer);
      answers = answers.map((answer) => html.escape(answer));

      await client.sendMessage("QuizBot", {
        message:
          <b>${questionText}</b>\n\n +
          A) ${answers[0]}\n +
          B) ${answers[1]}\n +
          C) ${answers[2]}\n +
          D) ${answers[3]}\n\n +
          ${COPYRIGHT},
        parse_mode: "HTML",
      });

      await sleep(400);

      await client.sendMessage("QuizBot", {
        poll: {
          question: "Javob:",
          answers: ["A", "B", "C", "D"],
          correct_option_id: correctIndex,
          type: "quiz",
          is_anonymous: false,
          explanation: COPYRIGHT,
          explanation_parse_mode: "HTML",
        },
      });
    } else {
      if (
        !Array.isArray(question.answers) ||
        question.correct_index === undefined
      ) {
        console.error("Missing required question data at index:", index);
        return;
      }
      await client.sendMessage("QuizBot", {
        poll: {
          question: question.question,
          answers: question.answers,
          correct_option_id: question.correct_index,
          type: "quiz",
          is_anonymous: false,
          explanation: COPYRIGHT,
          explanation_parse_mode: "HTML",
        },
      });
    }
    await sleep(500);
  } catch (err) {
    if (err.name === "FloodWaitError") {
      console.log(FloodWait error: waiting ${err.seconds} seconds);
      await sleep(err.seconds * 1000);
      await sendQuiz(client, index);
    } else {
      console.error("Error sending quiz:", err);
      console.log("Question index:", index);
      console.log("Question:", question);
    }
  }
}