PLUGIN ERROR – Can get on website or dashboard

I updated a plugin for plugins/weptile-image-slider-widget and now I can no longer get on the website or login into the dashboard. This is the error I get if I do either. HELP. How do I fix this? Parse error: syntax error, unexpected T_FUNCTION in /home/content/m/g/a/mgallin27/html/wp/wp-content/plugins/weptile-image-slider-widget/weptile-image-slider-widget.php on line 856