Fatal error: Uncaught Twig_Error_Syntax: Unknown "file_exists" function in "__string_template__426bc2bf41db5ce74d4e79a02b51256ba310741dfb86b32a1c57b8bb2962e924" at line 12. in /var/www/vhosts/bbshoes.gr/httpdocs/system/library/template/Twig/ExpressionParser.php:574 Stack trace: #0 /var/www/vhosts/bbshoes.gr/httpdocs/system/library/template/Twig/ExpressionParser.php(351): Twig_ExpressionParser->getFunctionNodeClass('file_exists', 12) #1 /var/www/vhosts/bbshoes.gr/httpdocs/system/library/template/Twig/ExpressionParser.php(144): Twig_ExpressionParser->getFunctionNode('file_exists', 12) #2 /var/www/vhosts/bbshoes.gr/httpdocs/system/library/template/Twig/ExpressionParser.php(84): Twig_ExpressionParser->parsePrimaryExpression() #3 /var/www/vhosts/bbshoes.gr/httpdocs/system/library/template/Twig/ExpressionParser.php(41): Twig_ExpressionParser->getPrimary() #4 /var/www/vhosts/bbshoes.gr/httpdocs/system/library/template/Twig/ExpressionParser.php(78): Twig_ExpressionParser->parseExpression() #5 /var/www/vhosts/bbshoes.gr/httpdocs/s in /var/www/vhosts/bbshoes.gr/httpdocs/system/library/template/Twig/ExpressionParser.php on line 574