Type not found : kogito.Serializable

04 07:10:43,986 ERROR [org.kie.kog.per.pro.ProtobufMonitorService] (main) Failed to register proto file: /home/kogito/data/protobufs/processquestions.proto: org.kie.kogito.persistence.protobuf.ProtobufValidationException: Failed to resolve type of field "life.genny.kogito.processquestions.Answer.created". Type not found : kogito.Serializable
at org.kie.kogito.persistence.protobuf.ProtobufService.createSerializationContext(ProtobufService.java:145)
at org.kie.kogito.persistence.protobuf.ProtobufService.registerProtoBufferType(ProtobufService.java:96)

Here's the proto file (generated as part of kogito build) that is causing the issue:
message Answer

{ /* @Field(index = Index.NO, store = Store.YES) @SortableField */ optional kogito.Serializable created = 1[(kogito_java_class) = "java.time.LocalDateTime"]; /* @Field(index = Index.NO, store = Store.YES) @SortableField */ optional string dataType = 2; /* @Field(index = Index.NO, store = Store.YES) @SortableField */ optional bool expired = 3; }

The data type for "created" field is "java.time.LocalDateTime".