Uncaught (in promise) TypeError: Cannot read property '0' of undefined at Object.parseIndexableString

[amadeuspagel]

I get this error when searching for certain strings, search for other strings works fine. I have no idea what makes the difference. It's not that the strings that lead to the error don't have any results. Maybe it's that strings that have too many results lead to the error?
This problem suddenly appeared. I have no idea why. I'm looking for a change I made that could have caused it, but maybe it's the number of notes?
Curiously, I did not have this problem with an incognito session.
I deleted my local data and that fixed it.