Question Vive Trackers not being detected when building Unity project.

I'm using a Valve index with two HTC vive trackers for my project. I do not require the hand controllers. There are no problems with using the trackers when playing in Unity. But when building and running it, the trackers aren't detected for the motion, though the scene is viewed in the Index.

The trackers are configured in the SteamVR application. It is imported in project by adding the 'StreamVR_Behaviour_Pose' script on the GameObject and assigning the input Source as well.

Using: Unity 2021.2.13f1, HMD (Valve Index) with Vive Trackers 2.0
Plugins: OpenVR and OpenXR both are enabled.

On viewing the Editor.log file, it shows that the lighthouses and trackers are being connected. (Can't attach the debug.log) file.

I have tried the following, but failed:
1. Checking the proper configuration of the trackers in the SteamVR application
2. Switching on the Index controllers when running the build project. (From other answers that i found in this forum).
3. Using only the OpenVR plugin for the project, switching off OpenXR