Errors using Audacity on Rasp Pi 4

Hi all. I have returned to recording on the HiFiBerry DAC+ ADC after a break. But I am encountering errors using Audacity software - see enclosed image. Any ideas on how to address this?

Hardware is Raspberry Pi 4, with HiFiBerry DAC+ ADC Pro. Software is Raspberry Pi OS with latest updates. Pi OS says Audacity is 2.4.2.

I have tried removing PulseAudio as suggested on the Pi website, as I thought it may conflicting with Audacity - but I suspect the problem is deeper.

Prior to removing Pulse - recording and playback using "arecord" worked ok. Currently playback is not working due to absence of Pulse. I may have to put this back.


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