Newtonsoft JSON package missing after moving project?

Not sure where to put this.
I moved my project folder from one laptop to another.
Now I am getting errors that the Newtonsoft namespace could not be found.

I did not have any Newtonsoft folders in my project, so I guess it must have been in the packages?
But I tried to re-add Newtonsoft JSON as a package, but I can't find it in the package manager?

Can anyone help?

 

It is now included as part of unity, add their package instead of the newtonsoft one

https://docs.unity3d.com/Packages/com.unity.nuget.newtonsoft-json@3.0/manual/index.html

 

How can I add it?

I can't find it in the package manager.

 

You can add it via package manager using "com.unity.nuget.newtonsoft-json@3.0" or "com.unity.nuget.newtonsoft-json", if unsure how to do that I suggest reading up on the different ways to add packages to package manager:

https://docs.unity3d.com/Manual/upm-ui-quick.html

Good luck

 

Thank you!