Fatal error: Uncaught --> Smarty Compiler: Syntax error in template "file:/var/www/frontend/templates/html/html.tpl" on line 39 "{if {isFallbackSupport}}" unknown tag 'isFallbackSupport' <-- thrown in /var/www/frontend/vendor/smarty/smarty/libs/sysplugins/smarty_internal_templatecompilerbase.php on line 39