PHP 7.4, 8+ compatibility

[ykyu]

I have a client that uses a theme based off Archimedes that's been intermittently causing 500 server errors and error log seems to suggest it's mostly PHP 7.4 compatibility issues. Editing out offending lines of code which mostly use deprecated functions for various things seems to fix things, but it'd be good to take care of the issues in one fell swoop instead of as they get triggered.

I saw that Archimedes was deprecated, but is Inkblot itself PHP 7.4 compatible? What about 8+?

[ykyu]

Fresh install of Inkblot seems to now generate a "There has been a critical error on this website" error on all Webcomic-related pages (comic archive, single page, etc) while normal WP pages are fine.

WP 6.0, PHP 7.4.