Im having the same exact error on both my iMac Pro and my Macbook pro. They are also running Mojave latest beta. I tried adobe customer chat support last night for two hours and was not able to correct the issue even after clean installs. The agent said they would need an export specialist to look into it and were supposed to get back to me within 24 hrs (started troublesbooting 24hrs ago now).
Hope this gets resolved quickly. I had no issues last weekend and now suddenly this without any change on my part