Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

java.lang.IllegalThreadStateException: null	at java.lang.Thread.start(Thread.java:705)	at com.mongodb.connection.DefaultServerMonitor.invalidate(DefaultServerMonitor.java:88)	at com.mongodb.connection.DefaultServer.invalidate(DefaultServer.java:120)	at com.mongodb.connection.DefaultServer.handleThrowable(DefaultServer.java:150)	at com.mongodb.connection.DefaultServer.access$500(DefaultServer.java:38)	at com.mongodb.connection.DefaultServer$DefaultServerProtocolExecutor.execute(DefaultServer.java:161)	at com.mongodb.connection.DefaultServerConnection.executeProtocol(DefaultServerConnection.java:286)	at com.mongodb.connection.DefaultServerConnection.query(DefaultServerConnection.java:209)	at com.mongodb.operation.FindOperation$1.call(FindOperation.java:496)	at com.mongodb.operation.FindOperation$1.call(FindOperation.java:482)	at com.mongodb.operation.OperationHelper.withConnectionSource(OperationHelper.java:239)	at com.mongodb.operation.OperationHelper.withConnection(OperationHelper.java:212)	at com.mongodb.operation.FindOperation.execute(FindOperation.java:482)	at com.mongodb.operation.FindOperation.execute(FindOperation.java:79)	at com.mongodb.Mongo.execute(Mongo.java:772)	at com.mongodb.Mongo$2.execute(Mongo.java:759)	at com.mongodb.DBCursor.initializeCursor(DBCursor.java:851)	at com.mongodb.DBCursor.hasNext(DBCursor.java:152)