HDR Pipeline Asset ERROR !! cs(4,42): error CS0234: The type or namespace name 'HDPipeline' does not exist in the namespace 'UnityEngine.Experimental.Rendering' (are you missing an assembly reference?)

Hi! I'm trying to follow this link of webRTC https://www.youtube.com/watch?v=WuCnytHZkTM I when I open a new streaming project template this error occurs Assets\RenderPipeline\HDRP\Scripts\Editor\HDRPInitialSetupPostProcessor.cs(4,42): error CS0234: The type or namespace name 'HDPipeline' does not exist in the namespace 'UnityEngine.Experimental.Rendering' (are you missing an assembly reference?) You can see in the photo where is the error. I checked the HDR asset and is correctly set in the project settings. I don't understand why is not recognizing it in this script. Does anyone know how I can fix it????? Thanks a lot! [1]: /storage/temp/169354-dserere.jpg