error on activate plugin

Hi,

when i activate the plugin i got error
(Parse error: syntax error, unexpected ‘)’, expecting :: (T_PAAMAYIM_NEKUDOTAYIM) in /home/development/public_html/tripmachine/wp-content/plugins/messenger-bot-for-woocommerce/mbot-woocommerce.php on line 83)

Please let me know why this error comes and what is the solution for this error.

plugin url : https://www.ads-software.com/plugins/messenger-bot-for-woocommerce/

Regard’s
Subhash Kumar