[I] mongodb source NullPointerException [seatunnel]

[via GitHub]

wjmmjr opened a new issue, #9045:
URL: https://github.com/apache/seatunnel/issues/9045

   ### Search before asking
   
   - [x] I had searched in the 
[issues](https://github.com/apache/seatunnel/issues?q=is%3Aissue+label%3A%22bug%22)
 and found no similar issues.
   
   
   ### What happened
   
   mongodb source读数据的时候获取不到游标问题,mongodb服务是4.0.0，mongodb驱动是4.7.1
   
   ### SeaTunnel Version
   
   2.3.9
   
   ### SeaTunnel Config
   
   ```conf
   source {
     MongoDB {
       uri = "mongodb://datauser_readonly:7Gb7DZ6A0eKrxx@69.230.245.11:27017"
       database = "db_rp_resources"
       collection = "c_app_user"
       split.key = "_id"
       split.size = 100
       schema = {
         fields {
           "_id"= string
           "_class"= string
         }
       }
     }
   }
   ```
   
   ### Running Command
   
   ```shell
   flink session
   ```
   
   ### Error Exception
   
   ```log
   Caused by: java.lang.NullPointerException
                at 
org.apache.seatunnel.shade.com.google.common.base.Preconditions.checkNotNull(Preconditions.java:877)
                at 
org.apache.seatunnel.connectors.seatunnel.mongodb.source.reader.MongodbReader.closeCurrentSplit(MongodbReader.java:150)
                at 
org.apache.seatunnel.connectors.seatunnel.mongodb.source.reader.MongodbReader.pollNext(MongodbReader.java:101)
                at 
org.apache.seatunnel.translation.flink.source.FlinkSourceReader.pollNext(FlinkSourceReader.java:81)
                at 
org.apache.flink.streaming.api.operators.SourceOperator.emitNext(SourceOperator.java:385)
                at 
org.apache.flink.streaming.runtime.io.StreamTaskSourceInput.emitNext(StreamTaskSourceInput.java:68)
                at 
org.apache.flink.streaming.runtime.io.StreamOneInputProcessor.processInput(StreamOneInputProcessor.java:65)
                at 
org.apache.flink.streaming.runtime.tasks.StreamTask.processInput(StreamTask.java:519)
                at 
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:203)
                at 
org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:807)
                at 
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:756)
                at 
org.apache.flink.runtime.taskmanager.Task.runWithSystemExitMonitoring(Task.java:948)
                at 
org.apache.flink.runtime.taskmanager.Task.restoreAndInvoke(Task.java:927)
                at 
org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:741)
                at org.apache.flink.runtime.taskmanager.Task.run(Task.java:563)
                at java.lang.Thread.run(Thread.java:750)
   ```
   
   ### Zeta or Flink or Spark Version
   
   flink15.3
   
   ### Java or Scala Version
   
   _No response_
   
   ### Screenshots
   
   _No response_
   
   ### Are you willing to submit PR?
   
   - [ ] Yes I am willing to submit a PR!
   
   ### Code of Conduct
   
   - [x] I agree to follow this project's [Code of 
Conduct](https://www.apache.org/foundation/policies/conduct)
   


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