Der Errorlog sagt folgendes
[14-Nov-2017 21:54:10 Europe/Berlin] PHP Fatal error: Uncaught exception 'SmartyCompilerException' with message 'Syntax Error in template "/www/htdocs/w00aa000/tierfit-tiernahrung.de/themes/Frontend/Bare/frontend/index/index.tpl" on line 7 "<html class="no-js" lang="{s name='IndexXmlLang'}{/s}" itemscope="itemscope" itemtype="http://schema.org/WebPage">" unknown tag "s"' in /www/htdocs/w00aa000/tierfit-tiernahrung.de/engine/Library/Smarty/sysplugins/smarty_internal_templatecompilerbase.php:657
Stack trace:
#0 /www/htdocs/w00aa000/tierfit-tiernahrung.de/engine/Library/Smarty/sysplugins/smarty_internal_templatecompilerbase.php(443): Smarty_Internal_TemplateCompilerBase->trigger_template_error('unknown tag "s"', 7)
#1 /www/htdocs/w00aa000/tierfit-tiernahrung.de/engine/Library/Smarty/sysplugins/smarty_internal_templateparser.php(2388): Smarty_Internal_TemplateCompilerBase->compileTag('s', Array)
#2 /www/htdocs/w00aa000/tierfit-tiernahrung.de/engine/Li in /www/htdocs/w00aa000/tierfit-tiernahrung.de/engine/Library/Smarty/sysplugins/smarty_internal_templatecompilerbase.php on line 657