Fatal error: Uncaught InvalidArgumentException: Route callable must be callable in /home/webdev/domains/tpapi.topicplus.co.uk/public_html/Slim/Route.php:178 Stack trace: #0 /home/webdev/domains/tpapi.topicplus.co.uk/public_html/Slim/Route.php(107): Slim\Route->setCallable() #1 /home/webdev/domains/tpapi.topicplus.co.uk/public_html/Slim/Slim.php(443): Slim\Route->__construct() #2 /home/webdev/domains/tpapi.topicplus.co.uk/public_html/Slim/Slim.php(473): Slim\Slim->mapRoute() #3 /home/webdev/domains/tpapi.topicplus.co.uk/public_html/classes/class.restService.php(262): Slim\Slim->get() #4 /home/webdev/domains/tpapi.topicplus.co.uk/public_html/classes/class.restService.php(114): restService->initializeService() #5 /home/webdev/domains/tpapi.topicplus.co.uk/public_html/docs/index.php(16): restService->__construct() #6 {main} thrown in /home/webdev/domains/tpapi.topicplus.co.uk/public_html/Slim/Route.php on line 178