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Hi Am using vaadin add on for table export , but amfacing following error
... 50 more Caused by: java.lang.NullPointerException at com.vaadin.addon.tableexport.TableExport.sendConvertedFileToUser(TableExport.java:92) at com.vaadin.addon.tableexport.ExcelExport.sendConverted(ExcelExport.java:378) at com.vaadin.addon.tableexport.TableExport.export(TableExport.java:68)
I'm not familiar with this addon, but as a wild guess after glancing at the source code, are you trying to do that from a background thread? Looks like your UI reference might be null. If not, you might want to ask on the add-on's own thread, to make sure the author of the addon sees the question.