Power Bi Report Builder. Problem with Graph dates

Hi all,

i need help and many thanks in advance.

In power bi report builder i have imported correctly the data set.

So wen i try to create the istogram or other graph not all the date are imported in the graph.

For example:

I have this dataset: 

when i created the graph, in my graph not are reported correctly all the date ma only a some month.

for example: 

despite having the data in the dataset, in this case the month of April is not reported

have you any suggest for me?

thanks in advance

gigh3n