Monthly donor stats broken

[AJMSmith]

It appears that the monthly donor stats page is broken.

To be precise it shows no results for July 2018 and the August 2018 results seem to be the total of what should have been the July number and the August number.

[bollix47]

I'm seeing the same and have reported it to PG.

[AJMSmith]

September and October worked ... but there's nothing showing for the period since the end of October and that's almost 3 months now.