When starting the proxy docker container and the following error appears, it means that the version of the actual database file is older than the one supported by the proxy. If there are operations with pending execution status, those external references will be also printed after the main error message. Otherwise, if no pending operations exist, the proxy will automatically delete the actual database and recreate a new one.
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To handle this error, you can follow one of the follow solutions.
Wait until the proxy (last image) finishes the pending operations and then start the proxy with the new image.
Force deleting the database using the parameter "force.database.recreate" on the docker run container and then request new operations with the documents not processed. Ex: