A short-term fix to one of the problems in T149735 was to comment out the monthly metrics module because it was breaking the whole dashboard.

For some reason Sys.Date() - 1 - months(1) stopped working (started returning NA). I tried to fix it with explicit class-casting (as.POSIXct()) but while it worked on a local R installation (which I updated to 3.3.2 -- released Monday Oct 31 -- to be just like the vagrant container in the labs instance), it did not work in production.

Let's get the module operational again :)