Integration Problems in Unity

[Wakeelfahmed]

i am on unity 2020.3.1f1 LTS, i have a VR project with which i want use this TTS. but I have getting many errors in integrating these projects together.
the type or namespace 'Media' does not exist in the namespace 'System' (are you missing an assembly reference)

When i seperatly run this TTS on unity 2020.3.1f1, still errors come, but after copying packages and settings the error goes away, but not when the VR project is also there.
the VR project:
https://learn.unity.com/tutorial/vr-project-setup-1?uv=2020.3&courseId=60183276edbc2a2e6c4c7dae&projectId=60183335edbc2a2e6c4c7dcb
OR
https://connect-prd-cdn.unity.com/20210402/8a67971c-e957-4844-9964-8445a85103e8/Create-with-VR_2020LTS.zip

[unitycoder]

at least need to enable [x] allow unsafe code, from Settings/Player settings/Other settings area.