Chart not showing all months name

you cannot set the values at(0,0) this is the valid reason

I feel if you increase the size of the chart it will pile up, otherwise, you can overwrite the default behaviour of the month rendering option.

Try these solution.

1. You need to check your data for this, may be data is null for the missing months.

2. Increase your charts width.

Hello,

Please Share the data response you are getting.

Also, try to increase width of chart.

Thanks