The same happened to me. And apparently
to someone else.
Per the comments in that thread, the gawk extension shouldn't be installed on hf kindles. (Is it the only one?)
Would it be possible to add a note to that effect in the first post, so people don't install it by mistake?
I know the later kindles aren't listed as supported in the linked post on the
gawk installer, but that's from 2019 so it just seemed out of date.
Thank you! (And thank you for all these hacks in general. Just being able to run koreader on kindles is amazing, let alone the rest of it.)