According to the API https://core.telegram.org/bots/api

Telegram does not always return 'result', and it does.

Author: lyucean

Telegram.php

@@ -3087,7 +3087,7 @@ public function getUpdates($offset = 0, $limit = 100, $timeout = 0, $update = tr
         $content = ['offset' => $offset, 'limit' => $limit, 'timeout' => $timeout];
         $this->updates = $this->endpoint('getUpdates', $content);
         if ($update) {
-            if (is_array($this->updates['result']) && count($this->updates['result']) >= 1) { //for CLI working.
+            if (array_key_exists('result', $this->updates) && is_array($this->updates['result']) && count($this->updates['result']) >= 1) { //for CLI working.
                 $last_element_id = $this->updates['result'][count($this->updates['result']) - 1]['update_id'] + 1;
                 $content = ['offset' => $last_element_id, 'limit' => '1', 'timeout' => $timeout];
                 $this->endpoint('getUpdates', $content);