I'm behind a corporate firewall and I'm having trouble installing Unity on Ubuntu 18.04. I can access the 3 locations listed here: https://docs.unity3d.com/Manual/upm-network.html packages.unity.com download.packages.unity.com upm-cdn.unity.com (or upm-cdn-china.unitychina.cn for locations in China) I've also set up the SSL certificates. Meanwhile, there doesn't seem to be much available information for debugging. Is there a flag that can be used with AppImage to get more information? Is there any way to manually install a linux Unity editor? I don't see that as an option from the Archive downloads. Thanks!