Plugin not working in OJS 3.1.2

[apacetech]

This page isn’t working domain is currently unable to handle this request.
HTTP ERROR 500

OJS Error Log: PHP Fatal error: Uncaught --> Smarty: undefined extension class 'Smarty_Internal_Method_Assign_By_Ref' <--
thrown in /home/innowar1/public_html/journals/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_internal_undefined.php on line 62

[a-vodka]

Dear @apacetech
By the link new version is available,
https://www.dropbox.com/s/sb3paxm0so4bkkx/copernicus.tar.gz?dl=0

In several days it will be available through ojs gallery