Milestones without start date can cause Epic to not show sidebar due to JS error
Summary
When a milestone is created with either start or due date blank, and then this milestone is used in any Issue. Within Epics, we can add such issue and milestones from issues can be utilized to set start and finish dates for Epics. In case Milestone is updated to remove either of the dates after the it is used for Epics, landing page for Epics throws JS error while rendering sidebar.