PostgresConnector does not allow a numeric slot name

Create postgresql-connector with numeric slot name by the following command: curl -i -X POST -H "Accept:application/json" -H "Content-Type:application/json" http://localhost:8083/connectors/ -d' { "name": "postgresql-connector", "config": { "connector.class": "io.debezium.connector.postgresql.PostgresConnector", "database.hostname": "postgresql", "database.port": "5432", "database.user": "postgres", "database.password": "postgres", "database.dbname": "postgres", "slot.name": "123", "database.server.name": "test" } }' Check log or connector status using the following command: curl -XGET http://localhost:8083/connectors/postgresql-connector/status AR: Caused by: org.postgresql.util.PSQLException: ERROR: syntax error at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2440) at org.postgresql.core.v3.QueryExecutorImpl.processCopyResults(QueryExecutorImpl.java:1116) at org.postgresql.core.v3.QueryExecutorImpl.startCopy(QueryExecutorImpl.java:842) at org.postgresql.core.v3.replication.V3ReplicationProtocol.initializeReplication(V3ReplicationProtocol.java:58) at org.postgresql.core.v3.replication.V3ReplicationProtocol.startLogical(V3ReplicationProtocol.java:42) at org.postgresql.replication.fluent.ReplicationStreamBuilder$1.start(ReplicationStreamBuilder.java:38) at org.postgresql.replication.fluent.logical.LogicalStreamBuilder.start(LogicalStreamBuilder.java:37) at io.debezium.connector.postgresql.connection.PostgresReplicationConnection.startPgReplicationStream(PostgresReplicationConnection.java:297) at io.debezium.connector.postgresql.connection.PostgresReplicationConnection.createReplicationStream(PostgresReplicationConnection.java:189) at io.debezium.connector.postgresql.connection.PostgresReplicationConnection.startStreaming(PostgresReplicationConnection.java:179) at io.debezium.connector.postgresql.RecordsStreamProducer.start(RecordsStreamProducer.java:105) ... 11 more