New SMT HeaderToValue not working

What Debezium connector do you use and what version?

Oracle, 2.2.Final

What is the connector configuration?

    "transforms": "changes,moveHeadersToValue",
    "transforms.changes.type": "io.debezium.transforms.ExtractChangedRecordState",
    "transforms.changes.header.changed.name": "Changed",
    "transforms.moveHeadersToValue.type": "io.debezium.transforms.HeaderToValue",
    "transforms.moveHeadersToValue.headers": "Changes",
    "transforms.moveHeadersToValue.fields": "Changed",
    "transforms.moveHeadersToValue.operation": "move",

When changing "transforms.moveHeadersToValue.headers" to "Changed", then the error as can be seen in the attached logs appears

What is the captured database version and mode of depoyment?

Oracle 19c, on prem, non CDB

What behaviour do you expect?

Header information should be moved / copied into the value.

What behaviour do you see?

No Header information is moved / copied into the value.