Thank you for putting the point @dana.canzano
Sorry I forgot to mention.
I have done ./neo4j unbind in all the servers after stopping the servers and then I did the above steps.
I too got this error while uploading a database in neo4j causal cluster with 3 core servers and 6 read replicas.
But I got a fix for this...
Delete the graph.db folder inside <neo_4j_path>/data/database and then try neo4j-admin import in the core ser...