Export Fail!

[chantw0968]

Hello,
I also created a thread about my library being slow. However, a new issue has happened. Now my export failed.

calibre, version 7.26.0
ERROR: Failed: Failed to export data. Click "Show details" for more information.

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 3171, in export_library
File "calibre\db\cache.py", line 1227, in copy_format_to
File "calibre\db\backend.py", line 1821, in copy_format_to
File "shutil.py", line 197, in copyfileobj
PermissionError: [Errno 13] Permission denied

I again tried to export and received this error failed export.
Traceback (most recent call last):
File "calibre\gui2\dialogs\exim.py", line 156, in run_action
File "calibre\utils\exim.py", line 208, in export
File "calibre\db\backend.py", line 517, in __init__
File "calibre\db\backend.py", line 721, in initialize_custom_columns
File "calibre\db\backend.py", line 1145, in execute
File "C:\t\t\apsw-42s16m2x\src\cursor.c", line 240, in resetcursor
apsw.BusyError: BusyError: database is locked

[kovidgoyal]

See https://manual.calibre-ebook.com/faq...n-denied-error