What’s your device? If it’s Mac <10.15 or android <6 or windows <10 it might stop working due to unity upgrade to version 6.0 from unity 2019. If you’re on old Mac you could try running windows version with wine.
yeahhhh its just old, happened w a few others. tis what it is. look forward to catching up eventually if ever replace. salute to OoT good times