2018-09-13 14:05:37,822 INFO - Importer started!
2018-09-13 14:05:37,823 INFO - Engine is running in Import mode
2018-09-13 14:05:37,824 INFO - All issues will be imported to project: MarketingManagement (MKT)
2018-09-13 14:05:37,824 INFO - Creating issue: [externalId='autoid-3297116954158708579', summary='"BM e Check Rev"']
2018-09-13 14:05:37,836 ERROR - Fatal error during import
java.lang.NullPointerException
at com.atlassian.jira.plugins.importer.imports.bulkcreate.engine.BulkCreateDataImporter.doImportIssues(BulkCreateDataImporter.java:235)
at com.atlassian.jira.plugins.importer.imports.bulkcreate.engine.BulkCreateDataImporter.runImporterEngine(BulkCreateDataImporter.java:172)
at com.atlassian.jira.plugins.importer.imports.bulkcreate.engine.BulkCreateDataImporter.doImport(BulkCreateDataImporter.java:147)
at com.atlassian.jira.plugins.importer.imports.importer.impl.ImporterCallable.call(ImporterCallable.java:26)
at com.atlassian.jira.plugins.importer.imports.importer.impl.ImporterCallable.call(ImporterCallable.java:15)
at com.atlassian.jira.task.TaskManagerImpl$TaskCallableDecorator.call(TaskManagerImpl.java:458)
at com.atlassian.jira.task.TaskManagerImpl$TaskCallableDecorator.call(TaskManagerImpl.java:426)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at com.atlassian.jira.task.ForkedThreadExecutor$ForkedRunnableDecorator.run(ForkedThreadExecutor.java:216)
at java.lang.Thread.run(Thread.java:745)
I tried to import issues from csv.
The Validation process works well but it doesn't work when it comes to import
this is the detailed log
does anyone know what's the problem?