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# Failed to read manifest- "Exception (Wait for Manifest to Stabilize. Unexpected Task Failure)"

### Issue <a href="#issue" id="issue"></a>

When trying to deployer clusters to Kubernetes in versions older than 1.16, the following errors can appear in the Clouddriver logs: 2021-05-04 21:17:16.032 WARN 1 --- \[0.0-7002-exec-9] c.n.s.c.k.c.ManifestController : Failed to read manifest

com.netflix.spinnaker.clouddriver.kubernetes.op.handler.UnsupportedVersionException: No replicaSet is supported at api version extensions/v1beta1 at com.netflix.spinnaker.clouddriver.kubernetes.op.handler.KubernetesReplicaSetHandler.status(KubernetesReplicaSetHandler.java:98) \~\[clouddriver-kubernetes.jar:na]

2021-05-05 14:29:09.653 WARN 1 --- \[utionAction-538] c.n.s.c.k.c.a.KubernetesCachingAgent : kubernetes/KubernetesCoreCachingAgent\[1/1]: Failure adding relationships for service

com.netflix.spinnaker.clouddriver.kubernetes.op.handler.UnsupportedVersionException: No replicaSet is supported at api version extensions/v1beta1 at com.netflix.spinnaker.clouddriver.kubernetes.op.handler.KubernetesReplicaSetHandler.getPodTemplateLabels(KubernetesReplicaSetHandler.java:167) The UI shows the following: "Exception (Wait for Manifest to Stabilize. Unexpected Task Failure)"

### Cause <a href="#cause" id="cause"></a>

Kubernetes deployment targets prior to version 1.16 are not supported in v2.26.x, as per the following:<https://docs.armory.io/docs/release-notes/rn-armory-spinnaker/armoryspinnaker_v2-26-2/>