Unity Package Manager Error (859839)

Here is the message error I am getting when I try and launch my project. This is a fresh install on a new OS Win10. I downloaded the the project a couple of times, as well as the editor. I am using 2019.1.4f1. Any help on this would be great. Thanks.

Are you using preview entities and burst?

If not, remove it from the Packages/manifest.json file.

If so, check the docs and figure out what the dependencies should be, then set them properly.

No one on my team knows what any of that means. I am pretty sure when we started the project we never added anything and all things should be default. So I dont know what we are using.

Quite annoyingly, “default” is meaning “27 pieces of crud that nobody uses but every new or upgraded project gets saddled with,” often ending up with messages like above. It’s so bad I keep a special snippet for just these occasions:

Extra unwanted packages in new projects (collab, testing, rider and other junk):

https://discussions.unity.com/t/846703/2

About the fastest way I have found to make a project and avoid all this noise is to create the project, then as soon as you see the files appear, FORCE-STOP (hard-kill) Unity (with the Activity Manager or Task Manager), then go hand-edit the Packages/manifest.json file as outlined in the above post, then reopen Unity.

Thanks, will give it a shot later.

So it turns out I did not have burst installed and I needed it to be installed because of 2d psd importer and 2d animation stuff. Thanks for helping!