Ecommerce shop gone- Now Fatal Error

Upon updating to the new version of Jigoshop, my entire shop part of the site disappeared. I tried to restore to last backup, couldn’t. So I uninstalled Jigoshop, went to Jigoshop.com and downloaded the version there. Uploaded it, and got the following error. I am sorry but I can only read it to the point of “/jigoshop-ecommerce/vendor” I don’t have it broken out by vendor.

Parse error: syntax error, unexpected ‘[‘ in /home4/emurphy/public_html/funtillucum.com/wp-content/plugins/jigoshop-ecommerce/vendor/nikic/fast-route/src/functions.php on line 12

Any suggestions on how to install the Jigoshop plugin and how to correct this issue.