Fatal error: Uncaught --> Smarty Compiler: Syntax error in template "app:app:installinstall.tpl" on line 13 "{if is_writeable('config.inc.php')}{translate|assign:"writable_config" key="installer.checkYes"}{else}{translate|assign:"writable_config" key="installer.checkNo"}{/if}" unknown modifier 'assign' <-- thrown in /var/www/html/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_internal_templatecompilerbase.php on line 13