Following a few slow-to-stuck loads in the minutes preceding, this error appeared. I’m guessing it affects only external-core wikis. Certainly, this is the first time I’ve encountered this error!
Was this a fluke that we need not worry about (@simon), or is there a significant risk of tiddlyhost external-core wikis encountering this problem (and hence being a consideration in favor of sticking to the larger html file format)?
Cheers!