Line graph not connecting with zero values

[chibi]

I have a section access and a master calendar but the lines in the graph are not connecting. 

[anat]

Try by checking the "Include zero/null value" under Add-ons >> Data Handling.

[chibi]

Already added both include null value and zero value. The result is still the same 

[chibi]

I got it had to change show as zero instead of gaps in the setting.