The cdf-apiserver pod does not restart and the CDF upgrade fails

When trying to upgrade from CDF 2020.08 to CDF 20202.11, the cdf-apiserver pod does not restart as expected, and the upgrade fails. When this issue occurs, critical errors that resemble the following are written to the cdf-apiserver log file:

Caused by: com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "error" (class suiteinstaller.v1_1.integration.etcd.bean.KubeEtcdResponseV3), not marked as ignorable (6 known properties: "errorCode", "message", "kvs", "cause", "header", "count"])

at [Source: (String)"{​​​​​​​"error":"etcdserver: invalid auth token","code":16}​​​​​​​"; line: 1, column: 11] (through reference chain: suiteinstaller.v1_1.integration.etcd.bean.KubeEtcdResponseV3["error"])

        at com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException.from(UnrecognizedPropertyException.java:61)

        at com.fasterxml.jackson.databind.DeserializationContext.handleUnknownProperty(DeserializationContext.java:840)

        at com.fasterxml.jackson.databind.deser.std.StdDeserializer.handleUnknownProperty(StdDeserializer.java:1192)

        at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.handleUnknownProperty(BeanDeserializerBase.java:1592)

        at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.handleUnknownVanilla(BeanDeserializerBase.java:1570)

        at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:294)

        at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:151)

        at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4202)

        at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3205)

        at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3173)

        at suiteinstaller.v1_1.integration.etcd.imp.KubeEtcdClientImp.get(KubeEtcdClientImp.java:159)

        ... 218 common frames omitted