Reverting all the way to f50ef3c07fcb5c9240daf47280c348eb31a158a4 doesn't fix it, so it's not a result of my recent changes. The sample was working for me previously, and I think the only thing I've changed is that I've flashed my 4a 5G forward from API 32 (I think that's what it was, maybe 31) to API 34.
Reverting all the way to f50ef3c07fcb5c9240daf47280c348eb31a158a4 doesn't fix it, so it's not a result of my recent changes. The sample was working for me previously, and I think the only thing I've changed is that I've flashed my 4a 5G forward from API 32 (I think that's what it was, maybe 31) to API 34.