Strange (but not fatal) error in Calibre Web

[dizzy_aardvark]

Version 4.6.3 64bit, Windows 11

Whenever I navigate to a library/author/etc. in Calibre Web, I get the following error popup (see below.) I can just X the error and continue my business but it's annoying.

The server is on port 9197, but I can't decipher what initially looks like ports after that

Error: Unhandled error
____________________
TypeError: all_settings[(intermediate value)] is undefined
Error at http://localhost:9197/:10878:130
Traceback (most recent call last):
____________________
ρσ_anonfunc@http://localhost:9197/:5951:38
complete_callback@http://localhost:9197/:5919:28
on_data_loaded@http://localhost:9197/:11515:24
set_library_option@http://localhost:9197/:10897:25
set@http://localhost:9197/:10878:130

[kovidgoyal]

fixed in the next calibre release