An Error Occurred (Gmail Sub Calendar Won't Sync) Screenshot Attached

Since I started using EM Client, its downloaded all the sub calendars in my gmail account, all but one. I checked to see if there was any difference in the calendar settings, compared to the others, and I don’t see anything. Please help me figure this out. Its very frustrating when I open my program every time and get this warning. ![]( 2 inline.png?1500124253 “Image:”)

Can someone please help me with this??