I had the same problem:
java.lang.NullPointerException at com.vaadin.addon.tableexport.TableExport.
sendConvertedFileToUser(TableExport.java:92)
I had the problem because I created a new table and it was not atteched to the UI.
I had the same problem:
java.lang.NullPointerException at com.vaadin.addon.tableexport.TableExport.
sendConvertedFileToUser(TableExport.java:92)
I had the problem because I created a new table and it was not atteched to the UI.