flink cdc postgres运行起来报这个错是什么原因?

flink cdc postgres运行起来报这个错是什么原因?io.debezium.DebeziumException: Creation of replication slot failed; when setting up multiple connectors for the same database host, please make sure to use a distinct replication slot name for each.
at io.debezium.connector.postgresql.PostgresConnectorTask.start(PostgresConnectorTask.java:144)
at io.debezium.connector.common.BaseSourceTask.start(BaseSourceTask.java:133)
at io.debezium.embedded.EmbeddedEngine.run(EmbeddedEngine.java:760)
at io.debezium.embedded.ConvertingEngineBuilder$2.run(ConvertingEngineBuilder.java:192)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:750)
Caused by: org.postgresql.util.PSQLException: ERROR: replication slot "sink_test_cdc1" already exists
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2675)
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2365)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:355)
at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:490)
at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:408)
at org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:329)
at org.postgresql.jdbc.PgStatement.executeCachedSql(PgStatement.java:315)
at org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:291)
at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:286)
at io.debezium.connector.postgresql.connection.PostgresReplicationConnection.createReplicationSlot(PostgresReplicationConnection.java:442)
at io.debezium.connector.postgresql.PostgresConnectorTask.start(PostgresConnectorTask.java:137)
... 6 more