Reproduction steps:

1. Create a New Project
2. Notice a pop-up "Unity Package Manger Error"
3. Press Continue
4. Notice a pop-up "Unity Package Manger Error"
5. Press Continue
6. Notice an Error in the Console

Expected Result: Package Manager works properly
Actual Result: Package Manager failed to resolve packages

Reproduced with: 2019.2.0a8
Did not reproduce on: 2019.2.0a7

Error:
"Failed to resolve packages: The file [/Applications/.../Unity.app/Contents/Resources/PackageManager/Editor/manifest.json] cannot be found. No packages loaded."

Going to said directory, the mentioned folder doesn't exist

Only Reproduce on MacOS