Error loading voice on mac

[hcoles]

Exception in thread "main" java.lang.RuntimeException: java.nio.file.DirectoryNotEmptyException: /tmp/voices-model1941286161740889295/vits-piper-en_GB-alba-medium
at org.pitest.voices.Chorus.loadVoice(Chorus.java:57)
at org.pitest.voices.Chorus.lambda$voice$0(Chorus.java:34)
at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1708)
at org.pitest.voices.Chorus.voice(Chorus.java:34)
at demo.Demo.main(Demo.java:18)