Jaspersoft Report Server 7.1
What the error message in the jasperserver.log file means is that the server threw an exception when it processed a report option label of an option that had already been imported with the ssame name (label):
2018-11-13 15:40:51,217 ERROR HibernateRepositoryServiceImpl,pool-14-thread-2:614 [root|superuser] - ******** Recovering from template.lock/saveOrUpdate ***** report.options.exception.label.already.exists
You can adjust the report server logging level to DEBUG level and get the label that the server is tripping on.
The STR taken to create a report option label with the same name is unknown.
We took export achive file and import it into our our lab environment, it failed with the same problem. It failed after importing one of the resource. We navigated to the customRepexport.zip/resources/ca_ppm/reports/Custom path in the archive file, opened the .folder.xml which lists all the resources that this export file will report and the order they are imported in. We identified the resource listed after the one that the import tripped over. It is a report option with a label 'X'. Another resource we previously imported had the same label so we modified the label in the XML file, re-zipped and tried to re-import. After that, the import succeeded.
You can either take the steps described above, or the problem resource's label that in the source repository and re-export the file.