genejg on "[Plugin: Staff grids free] [PHP Error] Triggers Fatal Error"

When first installing and attempting to activate, I receive error from host

Parse error: syntax error, unexpected T_FUNCTION in /wp-content/plugins/staff-grids-free/staff-grid-free.php on line 306

Please advise or fix. Thanks :)

https://wordpress.org/plugins/staff-grids-free/