NPE in SqlServerConnectorTask#cleanupResources() if connector failed to start

java.lang.NullPointerException
connect_1    | 	at io.debezium.connector.sqlserver.SqlServerConnectorTask.cleanupResources(SqlServerConnectorTask.java:211)
connect_1    | 	at io.debezium.connector.sqlserver.SqlServerConnectorTask.stop(SqlServerConnectorTask.java:172)
connect_1    | 	at org.apache.kafka.connect.runtime.WorkerSourceTask.tryStop(WorkerSourceTask.java:186)
connect_1    | 	at org.apache.kafka.connect.runtime.WorkerSourceTask.close(WorkerSourceTask.java:150)
connect_1    | 	at org.apache.kafka.connect.runtime.WorkerTask.doClose(WorkerTask.java:154)
connect_1    | 	at org.apache.kafka.connect.runtime.WorkerTask.doRun(WorkerTask.java:181)
connect_1    | 	at org.apache.kafka.connect.runtime.WorkerTask.run(WorkerTask.java:219)
connect_1    | 	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
connect_1    | 	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
connect_1    | 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
connect_1    | 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
connect_1    | 	at java.lang.Thread.run(Thread.java:748)