I’m attempting to combine 2 geojson files using ogr2ogr, but I’m getting the following errors:

Running this from a windows cmd window:

ogr2ogr PROW.geojson Rural.geojson Urban.geojson

Returns this:

Unable to open datasource `PROW_BANES_Rural.geojson’ with the
following drivers.

Running this from an AutoHotKey routine

runwait %comspec% /k ogr2ogr PROW.geojson Rural.geojson Urban.geojson

returns this:

Couldn’t fetch requested layer ‘PROW_BANES_Bath.geojson’!

I followed the instructions in item 4 here:
https://mapscaping.com/ogr2ogr-basics-cheat-sheet/

I tried multiple files in different orders, but it always returned the same error for the last geojson file.