Why do I get an error when I connect to the BotApi class?

Question

Yii

I have such a problem with Fatal error: Class 'TelegramBot\Api\BotApi' not found in C:\OpenServer\domains\crm\frontend\components\Telegram.php on line 8
Implemented the code like this

<?php

namespace frontend\components;

use TelegramBot\Api\BotApi;
/** @var string $bot */

$bot = new BotApi('1234');

In composer I have already downloaded https://github.com/TelegramBot/Api. But it is not clear why he writes that the class was not found. Do I need to write a telegram bot in pure php, or am I doing something wrong? Or is it always necessary to write in the url?

Answer 1

\TelegramBot\Api
Slash at the beginning