Spine Default Error.

Cannot create Invokable for Multimedium\SpineBlueprints\Controller\BlueprintController::.html(). This is not callable. Make sure this method is public.#0 /web/bobhead/bobhead.be/www/releases/9/vendor/multimedium/spine-pages/src/SpinePages/Router/Invokable/RouterInvokableCallable.php(74): Multimedium\SpinePages\Router\Invokable\RouterInvokableCallableByPath->_getCallable() #1 /web/bobhead/bobhead.be/www/releases/9/vendor/multimedium/spine-pages/src/SpinePages/Router/Invokable/RouterInvokableAbstract.php(58): Multimedium\SpinePages\Router\Invokable\RouterInvokableCallable->_invoke() #2 /web/bobhead/bobhead.be/www/releases/9/vendor/multimedium/spine-pages/src/SpinePages/Router/RouterInvokableList.php(68): Multimedium\SpinePages\Router\Invokable\RouterInvokableAbstract->invoke() #3 /web/bobhead/bobhead.be/www/releases/9/vendor/multimedium/spine-pages/src/SpinePages/Router/RouterInvokableList.php(29): Multimedium\SpinePages\Router\RouterInvokableList->invokeAtOffset() #4 /web/bobhead/bobhead.be/www/releases/9/vendor/multimedium/spine-pages/src/SpinePages/Router/RouterDispatcher.php(282): Multimedium\SpinePages\Router\RouterInvokableList->invoke() #5 /web/bobhead/bobhead.be/www/releases/9/public/index.php(188): Multimedium\SpinePages\Router\RouterDispatcher->getResponse() #6 {main}Http Code: 404