Gallery block: Crash when adding images and selecting a gallery item

[fluiddot]

Description

Sentry ticket: https://sentry.io/share/issue/e9deb70195184b10bf08a31afb2bce7b/

Adding images to the Gallery block and selecting an item of the gallery, produces the following error and crashes the app:

Error: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined.

NOTE: I spotted this issue while testing the beta version of WordPress-iOS 19.1 (19.1.0.0).

Step-by-step reproduction instructions

1. Add a Gallery block.
2. Add images to the gallery.
3. Observe that an error is displayed.

NOTE: I experienced that if the editor is re-opened after getting this error, the images might have been added. However, in this case, the issue can be also reproduced by selecting any of the gallery items.

Expected behaviour

Either adding images or selecting gallery items of the Gallery block shouldn't display errors or make the app crash.

Actual behaviour

Either adding images or selecting gallery items of the Gallery block display an error and make the app crash.

Screenshots or screen recording (optional)

WordPress information

• WordPress version: N/A
• Gutenberg version: N/A
• Are all plugins except Gutenberg deactivated? N/A
• Are you using a default theme (e.g. Twenty Twenty-One)? N/A

Device information

• Device: Simulator - iPhone 12 Pro Max
• Operating system: iOS 15.0
• WordPress app version: 19.1 (WordPress-iOS 19.1.0.0) and develop branch.