Hi I'm trying to load an Apache combined logfile into postgres but getting this:

2023-03-03T20:18:15.894899Z [error    ] Loading failed          
       code=1 message=Exception: key_properties field is require
d name=meltano run_id=f0e924f3-1060-4ff7-9feb-a6d20a8bc59f state
_id=2023-03-03T201814--tap-apachelog--target-postgres

I think there's something I need to add to meltano.yml - can anyone help?