Problem with ST_NRings

[Marco Boeringa]

Hi,

As part of a larger workflow, I am using a custom PostgreSQL function 
that depends on ST_NRings, and is used to create a MATERIALIZED VIEW.

This has worked flawlessly until recently. I now ran into an issue with 
the error message below. Going over my own code calling the custom 
function that includes the ST_NRings call, I just cannot see any recent 
code change made by myself explaining this sudden error. This part of 
the code has been stable for quite a while.

As input to the custom function, WGS1984 OpenStreetMap data is used, 
stored as  'geometry' type. There are actually explicit type casts in 
the code as well, so even that part of the error message I cannot 
explain for now.

My question: has there been any change to ST_NRings in a recent update 
of PostGIS (3.6.0 or 3.6.1?), that might explain this error? E.g. should 
the 'public' be in this error message at all, I would have expected 
"ERROR:  function st_nrings(geometry) does not exist"?

Marco

ERROR:  function st_nrings(public.geometry) does not exist
LINE 8:    WHEN ST_NRings($1) = 1 THEN $1
                 ^
HINT:  No function matches the given name and argument types. You might 
need to add explicit type casts.