Traceback (most recent call last):
File "calibre/gui2/dialogs/exim.py", line 156, in run_action
File "calibre/utils/exim.py", line 213, in export
File "calibre/db/cache.py", line 85, in call_func_with_lock
File "calibre/db/cache.py", line 3147, in export_library
File "calibre/db/backend.py", line 2723, in backup_fts_database
File "calibre/db/backend.py", line 2715, in _backup_database
apsw.FullError: FullError: error
