Guest cannot add products to cart on a Speedwell Site

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: Pegasus, 3.0
• Fix Version/s: Pegasus
• Component/s: Shopping Experience
• Labels:
  • 7.3-must
• Severity of Issue: Major
• Git Pull Request: https://github.com/marco-leo/liferay-portal-ee/pull/1224
• Sprint: FlexSprint14

Steps to Reproduce:

1. Create a Speedwell Site
2. Log out as admin (Test user) and navigate to the new site
   • Alternatively, access site using an incognito/private browser
3. Click on the menu icon > Catalog
4. Add an item to cart

Expected result
Based on COMMERCE-4507 and the automated test LocalFile.GuestCheckout#AssertGuestCartIsTransferredToAccount, a guest user should be able to add an item to cart.

Actual result
Adding an item to cart shows the Danger alert with no other information. No items are added to the cart.
No console errors.

Reproduced on:
Tomcat 9.0.33 + MySQL 5.7
7.1 FP18 + Commerce 2.1.3 RC3 at Git ID 96605cc9b333ac6c14d532cc3a7e979b1794bc2a