Can't create a new option template or search for an existing one on a product

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 2.1.1
• Component/s: Digital Merchandise Management → Options
• Labels: None
• Severity of Issue: Critical
• Portal Version/s:
  7.1.x
• Sprint: FlexSprint4, FlexSprint5

When searching for an option template on a product, errors are thrown in the UI and warnings are thrown in the logs

Assumptions

1. At least one catalog and one product

Steps to Reproduce

1. Go to Control Panel → Commerce → Products and edit a product
2. Go to the Options screen
3. Select the search bar and try try typing a string, e.g. Option 1

Expected Behavior

If any options match the string inputted, they are shown as existing options to choose from
the ability to create a new option template with the name of the string is offered by clicking the Create New button
If a user clicks the Create New button, a new option template is created with the name of the string and applied to the product.

Actual Behavior

Any existing option templates that match the string are not found
the ability to create a new option template with the name of the string is offered by clicking the Create New button
If a user clicks the Create New button, a new option is not created
Warnings thrown in the log

Error Logs

2020-05-05 01:41:36.364 WARN  [http-nio-9080-exec-1][code_jsp:178] {code="404", msg="ProxyServlet: /headless-commerce-admin-catalog/v1.0/options", uri=/o/headless-commerce-admin-catalog/v1.0/options}

Reproduced On

7.1.x

Tomcat 9.0.33 + HSQL 2.3.3
marco-leo/liferay-portal-ee:7.1.x
DXP 7.1 and Commerce git hash 3a8699c6f34d72f58c0b51b00fb18424f6d7b354