Bug Report: Critical Arithmetic Error in "Mastering Storefronts" Learning Path

Feedback Bug Reports
1

I am reporting a technical bug in the sample data for the “Mastering Storefronts with Liferay” course.

Problem: After running blade server init, Product Display Pages (PDP) return a blank screen and a console error: java.lang.ArithmeticException: BigInteger divide by zero at com.liferay.commerce.internal.price.CommerceProductPriceCalculationV2Impl.

Root Cause: The Price List Entries imported for the Clarity site have a value of 0 in the Quantity field. This causes the pricing engine to fail when calculating unit prices for the Display Page Templates.

Steps to Reproduce:

  1. Initialize the project with blade server init.

  2. Set “Product Details” as the default Display Page Template.

  3. Visit a product like “Round Metal Sunglasses”.

Requested Fix: Please update the course’s sample data to ensure all Price List Entries have a minimum Quantity of 1 instead of 0. This will prevent the division-by-zero exception and allow students to complete the Storefront exercises without manual database/UI fixes.

Thank you for maintaining this material!

2

Thanks for the report! This was introduced after an unintentional version bump in the gradle.properties, which was reverted late last week. Can you run these commands to try re-syncing the repo, before running the blade server init command and proceeding with the exercises?

git fetch origin
git reset --hard origin/main

As additional context: this appears to be fixed when the course database is upgraded to a newer patch release (2026.q1.1) instead of the initial 2026.q1.0 bundle. As such, this course will have its Liferay version updated to a 2026.q1 patch release within the next few weeks (alongside other updates relating to recently released features).