When Price List Price is set to 0 the product card on storefront disappears

• Type: Bug
• Status: Ready for Review
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.1.3
• Fix Version/s: 7.1.x
• Component/s: Order Management
• Labels: None
• Severity of Issue: Major
• Git Pull Request: https://github.com/marco-leo/liferay-portal-ee/pull/1234

Assumption

• An already created Minium site

Steps to Reproduce

• Go to Control Panel → Commerce → Pricing.
• Go to Price List tab.
• Create a new Price List.
• Go into Entries tab.
• Add a new entry for example MIN55861 (U-Joint).
• Edit the new entry.
• Make sure the "Price List Price" is set to 0.
• Active "Override Discount".
• Set Discount Level to 10-0-0-0.
• Click on Save.
• Go to Minium.

Expected Result

 Everything works.

Actual Result

 The product card disappears (in this case U-Joint):

This is the log error → Log_error.txt