diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-block-directory-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-block-directory-controller.php
index c2069b21bc..089a5215ba 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-block-directory-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-block-directory-controller.php
@@ -95,6 +95,11 @@ class WP_REST_Block_Directory_Controller extends WP_REST_Controller {
 		$result = array();
 
 		foreach ( $response->plugins as $plugin ) {
+			// If the API returned a plugin with empty data for 'blocks', skip it.
+			if ( empty( $plugin['blocks'] ) ) {
+				continue;
+			}
+
 			$data     = $this->prepare_item_for_response( $plugin, $request );
 			$result[] = $this->prepare_response_for_collection( $data );
 		}
diff --git a/wp-includes/version.php b/wp-includes/version.php
index a8fdb969ef..f817e15b61 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.6-alpha-48841';
+$wp_version = '5.6-alpha-48842';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.