Resolved [No active UnityEngine.XR.ARSubsystems.XRSessionSubsystem is available] Error problem

I was trying to make an AR scene for my game and the first time I have made it it worked fine. But after closing my project and opening it again it started to give me these errors


I have tried to look for a solution on the internet but could't find anything that helped.

Here are some other people having the same problem but their solutions not working for me:

https://forum.unity.com/threads/no-...tems-xrsessionsubsystem-is-available.1409694/
Couldn't find AR foundation Remote plugin or simulation feature

https://github.com/Unity-Technologies/arfoundation-samples/issues/486
The code that was missing in this persons code was there for me. So no problem with the code

https://stackoverflow.com/questions...r-arsubsystems-xrcamerasubsystem-is-available
My ARCore is already ticked (Tried ticking and unticking nothing changed)

These problems only give a yellow warning so it might not affect the project but I don't know if it will so I wanted to ask

 

Is initializing XR on startup in XR manager also enabled?
Is it possible to update Unity and to the latest ARF and ARCore/ARKit versions?

 

I do have initializing XR on startup enabled.
I have downloaded these packages yesterday. The versions were 4.2.8 latest in the package downloader

 

There are newer versions out already, you can change those in the packages manifest file