Board Thread:Support Requests - Designing Your Wiki/@comment-33688175-20200317170752/@comment-9605025-20200511054130

Unfortunately, it looks like the module is not capable of adjusting what gets used as major grid lines. The use of years as the major grid lines and months as the minor grid lines is all hard coded into the module. You could try to contact the author and ask if they can add this capability to the module. However, I don't know how long that would take if they agreed to do it.

Which errors are you seeing. I don't see any. If you are talking about how only two of the bars are visible, that is because your time span for the entire plot is too small.