Statuses missing the status category prevent the creation of Advanced Roadmaps plans

Issue Summary

If there are statuses missing the status category and these statuses are added to a project workflow, the creation of a plan using this project as the issue source fails and the preloader spins forever

Steps to Reproduce

1. Have statuses without status category and add them to the workflow of a project, let's call it project A
2. Create a plan using project A as the issue source

Expected Results

The plan is created normally

Actual Results

The plan's creation freezes and the preloader keep spinning forever

Workaround

Add the status category to the statuses without category, and to do this please follow the steps described below:

1. Go to Jira settings > Issues > Status
2. Locate the statuses where describes No category under the Category
3. Click on Edit
4. Select a value in the Category field
5. Click on Update