Materialize theme oepncart 2.3

[manwhocode]

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[beroNL]

OC version 3.0.3.2 clean install and latest templatel
If i go to my checkout, fill in the forms and i go to shipment, it gives me a javascrpt popup with two times the message "Internat server error".
In my log files, the next lines apears:

AH01071: Got error 'PHP message: PHP Fatal error: Uncaught Twig_Error_Syntax: Unexpected "endfor" tag (expecting closing tag for the "if" tag defined near line 25) in "materialize/template/checkout/shipping_method.twig" at line 45. in /var/www/vhosts/xxx/httpdocs/system/library/template/Twig/Parser.php:172\nStack trace:\n#0 /var/www/vhosts/xxx/httpdocs/system/library/template/Twig/TokenParser/If.php(43): Twig_Parser->subparse(Array)\n#1 /var/www/vhosts/xxx/httpdocs/system/library/template/Twig/Parser.php(187): Twig_TokenParser_If->parse(Object(Twig_Token))\n#2 /var/www/vhosts/xxx/httpdocs/system/library/template/Twig/TokenParser/If.php(34): Twig_Parser->subparse(Array)\n#3 /var/www/vhosts/xxx/httpdocs/system/library/template/Twig/Parser.php(187): Twig_TokenParser_If->parse(Object(Twig_Token))\n#4 /var/www/vhosts/xxx/httpdocs/system/library/template/Twig/TokenParser/For.php(40): Twig_Parser->subparse(Array)\n#5 /var/www/vhosts/xxx.\n', referer: http://xxx/index.php?route=checkout/checkout