When we try to install operators from other catalogs (community, certified...) they fail as well without showing the same error, but when we disable the redhat-operators catalog, they install successfully. This seems to be in line with the code where the error gets initiated, where apparently a faulty catalog would block installations from others:

    4.15.19

    100%

- Installed fresh cluster with agent-based installer - A three node cluster with static IPs 
- Cluster up and running normally 
- Tried with versions 4.15.19 and 4.15.20, same result. Upgrading 4.15.19 to 4.16.0. No fix. 
- Install LSO operator fails (Red Hat catalog) with error: https://github.com/openshift/operator-framework-olm/blob/28befe20a9f97db2a4a47c655b483de3197622da/staging/operator-lifecycle-manager/pkg/controller/registry/resolver/cache/cache.go#L142 
- Install ODF operator fails (Red Hat catalog) with the same error 
- Install Nvidia GPU operator fails (Certified catalog) with an error on Red Hat catalog 
- After see that the error is triggered here: https://github.com/openshift/operator-framework-olm/blob/28befe20a9f97db2a4a47c655b483de3197622da/staging/operator-lifecycle-manager/pkg/controller/registry/resolver/cache/cache.go#L413 . We disable Red Hat Catalog and Nvidia GPU operator install correctly. Seems one catalog blocked the other     

oc get pods -n openshift-marketplace
NAME                                    READY   STATUS     RESTARTS   AGE
certified-operators-2n5j9               1/1     Running    0          1h
community-operators-lx6v9               1/1     Running    0          1h
marketplace-operator-7f6676d76c-8qnrp   1/1     Running    0          1h
redhat-marketplace-zz5xk                1/1     Running    0          1h
redhat-operators-xtsg7                  0/1     Init:1/2   0          24m
redhat-operators-xzl5d                  1/1     Running    0          34m

    redhat-operator-x pod should run fine and operator installation should take place

    Workaround for the issue:
    1. Disable the  redhat-operator catalogue
    2. Create a custom catalogue pointing to redhat-operator index image
    3. edit the registry poll    apiVersion: operators.coreos.com/v1alpha1
       kind: CatalogSource
       metadata:
         name: custom-redhat-catalog
         namespace: openshift-marketplace
       spec:
         displayName: Red Hat Catalog
         image: 'registry.redhat.io/redhat/redhat-operator-index:v4.15'
         publisher: ''
         sourceType: grpc
         updateStrategy:
           registryPoll:
             interval: 30m     

    4. Try installing the operator it will work