[#14106] - Export report in text format error

If you want to add the text-only (.txt) report format option to your Export menus in JasperReports Server, you can do so by editing the following file:
{your jasperreports server install directory}\jasperserver\WEB-INF\flows\viewReportBeans.xml

Simply un-comment the following line:

<!-- entry key="txt" value-ref="txtExporterConfiguration"/-->

To be:

<entry key="txt" value-ref="txtExporterConfiguration" />

Reference: https://community.jaspersoft.com/wiki/how-enable-text-output-jasperrepor...

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In version 8.0.0 this stopped to work. Log error:

ERROR SecureExceptionHandlerImpl,pool-9-thread-2:125 (UID do erro: 27c5ea65-7a92-4a72-b463-15677e4bf516) com.jaspersoft.jasperserver.remote.ServiceException: Export format txt not supported or misconfigured
Arguments:
at com.jaspersoft.jasperserver.remote.services.impl.ReportExecutorImpl.exportReport(ReportExecutorImpl.java:184)
at com.jaspersoft.jasperserver.remote.services.impl.RunReportServiceImpl.generateReportOutput(RunReportServiceImpl.java:1162)
at com.jaspersoft.jasperserver.remote.services.impl.RunReportServiceImpl.executeExport(RunReportServiceImpl.java:615)
at com.jaspersoft.jasperserver.remote.services.impl.RunReportServiceImpl$2.run(RunReportServiceImpl.java:507)
at com.jaspersoft.jasperserver.api.logging.util.LoggableExecutorService$1.run(LoggableExecutorService.java:84)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)