Fatal error: Uncaught Twig\Error\RuntimeError: The merge filter only works with arrays or "Traversable", got "NULL" as second argument. in /home/mara13/public_html/twigtemplates/collection.twig:44
Stack trace:
#0 /home/mara13/public_html/cms/twigcache/7a/7a659b1b9103b270abcfdabf9898d3109b6cc25140cf12d843ee439d764eead9.php(129): twig_array_merge(Array, NULL)
#1 /home/mara13/public_html/cms/vendor/twig/twig/src/Template.php(184): __TwigTemplate_2858322d007e67ddaa6acd3081206ebe9d621f31db7a81e1baf1f92e4b945b2d->block_meta(Array, Array)
#2 /home/mara13/public_html/cms/twigcache/26/2692a1d54a6f934287c3c75d43bba59ebe80d6ff983dd9dce9cec8d1993b0bd0.php(52): Twig\Template->displayBlock('meta', Array, Array)
#3 /home/mara13/public_html/cms/vendor/twig/twig/src/Template.php(407): __TwigTemplate_5d99fcf94fa53285d6141ad8597f1b8e74824cc3375799a3132337fc90e3fa68->doDisplay(Array, Array)
#4 /home/mara13/public_html/cms/vendor/twig/twig/src/Template.php(380): Twig\Template->displayWithErrorHandling(Array, Array)
#5 /home/mara13/public_html in /home/mara13/public_html/twigtemplates/collection.twig on line 44