Traccar 4.1 Export Excel report and email report doesnot working

I am not able to export excel or email it .
I have the error :

Line 15781: 2018-10-26 00:23:42 ERROR: Method createTransformer of org.jxls.transform.poi.PoiTransformer class thrown an Exception - InvocationTargetException (... < ReportUtils:158 < Route:82 < ReportResource:113 < ...)
    Line 15782: 2018-10-26 00:23:42 ERROR: Thread exception - NullPointerException (... < ReportUtils:159 < Route:82 < ReportResource:113 < ...)
    Line 15793: 2018-10-26 00:23:45 ERROR: Method createTransformer of org.jxls.transform.poi.PoiTransformer class thrown an Exception - InvocationTargetException (... < ReportUtils:158 < Route:82 < ReportResource:113 < ...)
    Line 15812: 2018-10-26 00:23:48 ERROR: Method createTransformer of org.jxls.transform.poi.PoiTransformer class thrown an Exception - InvocationTargetException (... < ReportUtils:158 < Route:82 < ReportResource:113 < ...)
    Line 15825: 2018-10-26 00:23:49 ERROR: Method createTransformer of org.jxls.transform.poi.PoiTransformer class thrown an Exception - InvocationTargetException (... < ReportUtils:158 < Route:82 < ReportResource:113 < ...)
    Line 15849: 2018-10-26 00:23:50 ERROR: Method createTransformer of org.jxls.transform.poi.PoiTransformer class thrown an Exception - InvocationTargetException (... < ReportUtils:158 < Route:82 < ReportResource:113 < ...)
    Line 15899: 2018-10-26 00:23:53 ERROR: Method createTransformer of org.jxls.transform.poi.PoiTransformer class thrown an Exception - InvocationTargetException (... < ReportUtils:158 < Route:82 < ReportResource:113 < ...)
    Line 15917: 2018-10-26 00:23:54 ERROR: Method createTransformer of org.jxls.transform.poi.PoiTransformer class thrown an Exception - InvocationTargetException (... < ReportUtils:158 < Route:82 < ReportResource:113 < ...)
    Line 16002: 2018-10-26 00:23:54 ERROR: Method createTransformer of org.jxls.transform.poi.PoiTransformer class thrown an Exception - InvocationTargetException (... < ReportUtils:158 < Route:82 < ReportResource:113 < ...)
    Line 16252: 2018-10-26 00:24:20 ERROR: Method createTransformer of org.jxls.transform.poi.PoiTransformer class thrown an Exception - InvocationTargetException (... < ReportUtils:158 < Route:82 < ReportResource:113 < ...)
    Line 16258: 2018-10-26 00:24:21 ERROR: Method createTransformer of org.jxls.transform.poi.PoiTransformer class thrown an Exception - InvocationTargetException (... < ReportUtils:158 < Route:82 < ReportResource:113 < ...)
    Line 16265: 2018-10-26 00:24:21 ERROR: Method createTransformer of org.jxls.transform.poi.PoiTransformer class thrown an Exception - InvocationTargetException (... < ReportUtils:158 < Route:82 < ReportResource:113 < ...)

help please

Have you tried doing some search before posting your own thread?

https://www.traccar.org/forums/topic/traccar-41-export-excel-report-not-working/

Yes, I saw this before write. I create a topic including e-mail report, not only excel

Email report is exactly the same Excel report. And from the error message, it's pretty clear that the issue is the same. Separate topic is completely unnecessary in this case.

Understood