org.postgresql.util.PSQLException: ERROR: insert or update on table "node" violates foreign key constraint "fk_dpname"

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org.postgresql.util.PSQLException: ERROR: insert or update on table "node" violates foreign key constraint "fk_dpname"
at org.postgresql.util.PSQLException.parseServerError(PSQLException.java:139)
at org.postgresql.core.QueryExecutor.executeV3(QueryExecutor.java:152)
at org.postgresql.core.QueryExecutor.execute(QueryExecutor.java:100)

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