Can't Launch Calibre

[Lewis_Mcc94]

Any time I try to launch the app I get this error:

calibre, version 8.13.0
ERROR: Startup error: There was an error during calibre startup. Parts of calibre may not function. Click "Show details" to learn more.

Traceback (most recent call last):
File "calibre\db\fields.py", line 187, in get_categories
KeyError: 63

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "calibre\db\cache.py", line 1578, in get_categories
File "calibre\db\categories.py", line 259, in get_categories
File "calibre\db\fields.py", line 192, in get_categories
calibre.db.fields.InvalidLinkTable: series

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "calibre\db\fields.py", line 187, in get_categories
KeyError: 63

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "calibre\gui2\tag_browser\model.py", line 1382, in _get_category_nodes
File "calibre\db\cache.py", line 1587, in get_categories
File "calibre\db\cache.py", line 1578, in get_categories
File "calibre\db\categories.py", line 259, in get_categories
File "calibre\db\fields.py", line 192, in get_categories
calibre.db.fields.InvalidLinkTable: series

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "calibre\db\fields.py", line 187, in get_categories
KeyError: 63

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "calibre\db\cache.py", line 1578, in get_categories
File "calibre\db\categories.py", line 259, in get_categories
File "calibre\db\fields.py", line 192, in get_categories
calibre.db.fields.InvalidLinkTable: series

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "calibre\db\fields.py", line 187, in get_categories
KeyError: 63

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "calibre\gui2\main.py", line 307, in initialize_db_stage2
File "calibre\gui2\main.py", line 250, in start_gui
File "calibre\gui2\ui.py", line 381, in initialize
File "calibre\gui2\tag_browser\ui.py", line 137, in init_tag_browser_mixin
File "calibre\gui2\tag_browser\view.py", line 417, in set_database
File "calibre\gui2\tag_browser\model.py", line 524, in set_database
File "calibre\gui2\tag_browser\model.py", line 601, in _run_rebuild
File "calibre\gui2\tag_browser\model.py", line 606, in _rebuild_node_tree
File "calibre\gui2\tag_browser\model.py", line 1389, in _get_category_nodes
File "calibre\db\cache.py", line 1587, in get_categories
File "calibre\db\cache.py", line 1578, in get_categories
File "calibre\db\categories.py", line 259, in get_categories
File "calibre\db\fields.py", line 192, in get_categories
calibre.db.fields.InvalidLinkTable: series


I have restarted my PC, updated to the latest version and completely uninstalled and re-installed and nothing works

[JSWolf]

The database calibre is trying to load may be corrupted. Try renaming the directory and see what happens when calibre is not able to try to load that library's database.

[kovidgoyal]

That looks like a corrupted database. You can rebuild it with the command in comand prompt:

calibredb restore_database -r