fix: Avoid empty Gallery block error

packages/block-library/src/gallery/test/use-get-media.native.js

@@ -0,0 +1,24 @@
+/**
+ * External dependencies
+ */
+import { render } from 'test/helpers';
+
+/**
+ * Internal dependencies
+ */
+import useGetMedia from '../use-get-media';
+
+describe( 'useGetMedia', () => {
+	// TODO: Explore why a Gallery block would ever be without inner blocks.
+	// This test and the associated default function parameter might be unnecessary.
+	it( 'should not error when receiving zero images', () => {
+		// Arrange
+		const TestSubject = () => {
+			useGetMedia( undefined );
+			return null;
+		};
+
+		// Assert
+		expect( () => render( <TestSubject /> ) ).not.toThrow();
+	} );
+} );

packages/block-library/src/gallery/use-get-media.native.js

@@ -14,7 +14,7 @@ const EMPTY_IMAGE_MEDIA = [];
  *
  * @return {Array} An array of media info options for each gallery image.
  */
-export default function useGetMedia( innerBlockImages ) {
+export default function useGetMedia( innerBlockImages = [] ) {
 	return useSelect(
 		( select ) => {
 			const imagesUploading = innerBlockImages.some(

packages/react-native-editor/CHANGELOG.md

@@ -10,7 +10,8 @@ For each user feature we should also add a importance categorization label  to i
 -->
 
 ## Unreleased
-- [*] Support POST requests [#49371]
+-   [*] Support POST requests [#49371]
+-   [*] Avoid empty Gallery block error [#49557]
 
 ## 1.92.0
 * No User facing changes *