Pixeldust Drupal Support Service

Cache controller with json response

I want cached a controller that returns a json.. I try this:

$build = array(   '#cache' => array(     'contexts' => ['ip'],   ), ); return (new CacheableJsonResponse(['test'], 200))->addCacheableDependency(CacheableMetadata::createFromRenderArray($build));

But i get an exception:

LogicException: The controller result claims to be providing relevant cache metadata, but leaked metadata was detected. Please ensure you are not rendering content too early. Returned object class: DrupalCoreCacheCacheableJsonResponse. in DrupalCoreEventSubscriberEarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext() (line 154 of /Applications/MAMP/htdocs/finder-cms/docroot/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php). 

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Cache controller with json response

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