Selecting charts from Dashboard = blank page

Hi,
Just purchased vcharts and successfully installed on Joomla 3.x. When selecting Charts from Dashboard we get a blank page. Debug information gives error: "Parse error: syntax error, unexpected '=' in /var/www/vhosts/xxxxxx.com/xxxxxxx/administrator/components/com_vchart/models/vcharts.php on line 1438"
Tried uninstall and reinstall but same error. Screenshots attached.
Please advise asap

Same here. Setup PHP 7.1.6, Joomla 3.6.5, Centos

Thanks.

Hello,
Please download vChart again and try installing it on your webiste. If you still find issues, Please let us know.

Hi,
Downloaded and installed which didn't work. Then uninstalled, downloaded and re-installed. Charts now working. Thanks