Red Hat Single Sign-On (RH SSO) Operator crashes with the panic "invalid memory address or nil pointer dereference"

Issue

When deploying the RH SSO Operator, the following error is displayed in the container:

{"level":"info","ts":1665405106.626761,"logger":"controller_keycloak","msg":"Reconciling Keycloak","Request.Namespace":"<NAMESPACE>","Request.Name":"<NAME>"}
E1010 12:31:47.129450       1 runtime.go:78] Observed a panic: "invalid memory address or nil pointer dereference" (runtime error: invalid memory address or nil pointer dereference)
goroutine 10492 [running]:
k8s.io/apimachinery/pkg/util/runtime.logPanic(0x16e4f20, 0x27982f0)
...