~/Projects/footnote/build$ make
[ 10%] Generating src/Widgets/Notebook.c, src/Widgets/Note.c, src/Widgets/ExportDialog.c, src/Widgets/NoteView.c, src/Widgets/SideBar.c, src/Widgets/EditView.c, build/src/Config.c, src/Footnote.c
/home/gp/Projects/footnote/src/Widgets/ExportDialog.vala:31.43-31.58: error: duplicating List instance, use unowned variable or explicitly invoke copy method
        public ExportDialog.export_notes (List<Note> notes, string title) {
                                          ^^^^^^^^^^^^^^^^

** (valac:1815): CRITICAL **: vala_ccode_assignment_module_real_store_parameter: assertion `value != NULL' failed
Compilation failed: 1 error(s), 0 warning(s)
make[2]: *** [src/Widgets/Notebook.c] Error 1
make[1]: *** [CMakeFiles/footnote.dir/all] Error 2
make: *** [all] Error 2