Fatal error: Uncaught exception 'Twig_Error_Runtime' with message 'The merge filter only works with arrays or hashes; NULL and array given in "TwigBundle:Exception:error404.html.twig" at line 1.' in /2bu/app/cache/prod/classes.php:3843 Stack trace: #0 /2bu/app/cache/prod/twig/c8/1d/67178e50602b88ee33ec4ed2e606b844f2ef67c861f7098b934dd02ce152.php(35): twig_array_merge(NULL, Array) #1 /2bu/app/cache/prod/classes.php(4491): __TwigTemplate_c81d67178e50602b88ee33ec4ed2e606b844f2ef67c861f7098b934dd02ce152->doDisplay(Array, Array) #2 /2bu/app/cache/prod/classes.php(4472): Twig_Template->displayWithErrorHandling(Array, Array) #3 /2bu/app/cache/prod/twig/9d/9a/d97c083f833a568394237cfa1cc23ed58401effa04b55b0d1d224eb996c3.php(73): Twig_Template->display(Array) #4 /2bu/app/cache/prod/classes.php(4436): __TwigTemplate_9d9ad97c083f833a568394237cfa1cc23ed58401effa04b55b0d1d224eb996c3->block_body(Array, Array) #5 /2bu/app/cache/prod/twig/d3/99/e0097cbde9dc15894f34cac27fae93f6ea12402a21bf091ecaee26b37ed8.php(43): Twig_Template->displayBlo in /2bu/app/cache/prod/classes.php on line 3843