The query on a dashboard we have has stopped working.
Looking at the dataset there are two errors:

I've excluded NULL organisations but can't work out what this error is telling me.
I am trying to get the total number of organisations / tickets listed in the query.
The two metrics are set as follows.


Sorry to hear about that issue. One possible reason could be the custom metric is not executable. There might be a faulty custom metric on your report. In order to take a look closer at that report, I encourage you to raise a ticket to our Customer Support. Thank you!