My qbchatroom is showing an error

Hi all

I installed the above plugin according to the instructions. But the following error comes.

Fatal error: Call to undefined function curl_init() in D:\wamp\www\e-Stake\wp-content\plugins\quickblox-chat-room\qbchatroom.php on line 215

Please help on this

https://www.ads-software.com/plugins/quickblox-chat-room/