syntax error, unexpected T_STRING in class-gravity-forms-event-tracking-feed.php

I’m getting this error (white screen) upon activating the plugin:

Parse error: syntax error, unexpected T_STRING in class-gravity-forms-event-tracking-feed.php on line 170 Gravity Forms Google Analytics Event Tracking 1.6.4.

On line 170, it reads:

Racecore\GATracking\Autoloader::register( dirname(__FILE__) . '/vendor/ga-mp/src

I’m using Gravity Forms Google Analytics Event Tracking 1.6.4.

https://ww.wp.xz.cn/plugins/gravity-forms-google-analytics-event-tracking/