"Cannot parse selected content" error occurs when adding item to Collection block from UDW.

Steps

1. Add / Edit Landing Page.
2. Add Collection block.
3. Open Settings and click Select Content.
4. Choose valid content item.
5. Click Choose this content.
6. Click Confirm selection.

Actual result: Item is not added, "Cannot parse selected content from Universal Discovery Widget" error occurs (attached).
Expected result: Item is added without errors.