Schema can be null in namespaceLocation getter when navigating to clu…

…ster explorer - only embedded mode.

Signed-off-by: Francesco Torchia <francesco.torchia@suse.com>

dashboard/pkg/epinio/models/epinio-namespaced-resource.js

@@ -77,7 +77,7 @@ export default class EpinioMetaResource extends EpinioResource {
   get namespaceLocation() {
     return createEpinioRoute(`c-cluster-resource-id`, {
       cluster:  this.$rootGetters['clusterId'],
-      resource: this.schema.id,
+      resource: this.schema?.id,
       id:       this.meta.namespace,
     });
   }