I get the following when trying to export my library
calibre, version 4.15.0
ERROR: Failed: Failed to export data. Click "Show Details" for more information.
Traceback (most recent call last):
File "site-packages\calibre\gui2\dialogs\exim.py", line 140, in run_action
File "site-packages\calibre\utils\exim.py", line 204, in export
File "site-packages\calibre\utils\exim.py", line 114, in commit
MemoryError
Any ideas why and more importantly how to fix it