I've built several Pi Zero based streamers and made some changes to my master image and found the HifiBerry DAC Zero based streamer was no longer working properly. (Errors: "Fail to open ALSA device "HW:1.0" no such file or directory")
The streamer had been working properly prior to me reloading my master image
There was an older thread on similar issues, with no real solution given.
Ultimately, under the Playback Options, I set the Output Device to Generic I2S DAC and that seemed to fix things.
I hope that saves others some time and frustration.