I am trying to set up a QGIS Server to publish the WMS layer using a docker container.
I followed the following section in the QGIS Manual https://docs.qgis.org/3.16/en/docs/server_manual/containerized_deployment.html#docker-stacks
Based on this I was able to see this page successfully using the following url and it looked like that everything had been set up correctly. http://localhost:8080/qgis-server/?SERVICE=WMS&VERSION=1.3.0&REQUEST=GetCapabilities
But when I try to load this layer in the canvas I get the following error
I tried publishing the GeoJson Polygon layer by adding it to the source QGIS project but it was giving the same error as well. What am I doing wrong?