when Playing the video background, report android.view.WindowManager$BadTokenException:Unable to add window-token null is not valid;

I am trying to play videos in VideoView in the recyclerView using realTime database. Here is my adapter code of the recyclerView. :-

    class VideoAdapter(private var mContext: Context,private var mvideos: List<VID>) : RecyclerView.Adapter<VideoAdapter.ViewHolder>() {override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {val view = LayoutInflater.from(mContext).inflate(R.layout.videos_adapter, parent, false)return ViewHolder(view)}

    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        val videoid = mvideos[position]
    
        holder.vidId.text = videoid.getilp()
    
        val videolink = Uri.parse(videoid.getVideoUrl())
        val mediaController = MediaController(mContext)
        mediaController.setAnchorView(holder.videoIv)
        holder.videoIv.setMediaController(mediaController)
        holder.videoIv.setVideoURI(videolink)
        holder.videoIv.requestFocus()
        holder.videoIv.start()
    }
    
    override fun getItemCount(): Int {
        return mvideos.size
    }
    
    class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
        var videoIv: VideoView = itemView.videos_ret
        var vidId: TextView = itemView.videos_id_ret
    }

 }

After using this code. I am getting this error.

android.view.WindowManager$BadTokenException: Unable to add window -- token null is not valid; is your activity running? at android.view.ViewRootImpl.setView(ViewRootImpl.java:1444) at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:469) at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:114) at android.widget.MediaController.show(MediaController.java:384)
at android.widget.MediaController.show(MediaController.java:334)
at android.widget.VideoView$2.onPrepared(VideoView.java:521)
at android.media.MediaPlayer$EventHandler.handleMessage(MediaPlayer.java:4228) at android.os.Handler.dispatchMessage(Handler.java:106) at android.os.Looper.loop(Looper.java:246) at android.app.ActivityThread.main(ActivityThread.java:8653) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)

It plays the video for a few seconds in the background after crashing before closing the app. someone, please help me.

Instead of VideoView use Exoplayer:-

class VideoAdapter(
    private var mContext: Context,
    private var mvideos: List<VID>
) : RecyclerView.Adapter<VideoAdapter.ViewHolder>() {
    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
        val view = LayoutInflater.from(mContext).inflate(R.layout.videos_adapter, parent, false)
        return ViewHolder(view)
    }

    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        val videoid = mvideos[position]

        holder.vidId.text = videoid.getilp()

        val dataSourceFactory: DataSource.Factory = DefaultHttpDataSource.Factory()
        val videoLink = Uri.parse(videoid.getVideoUrl())
        val mediaSource: MediaSource = ProgressiveMediaSource.Factory(dataSourceFactory)
            .createMediaSource(MediaItem.fromUri(videoLink))

        holder.mPlayer = SimpleExoPlayer.Builder(mContext).build()
        holder.playerView.player = holder.mPlayer
        holder.mPlayer!!.playWhenReady = true
        holder.mPlayer!!.setMediaSource(mediaSource)
        holder.mPlayer!!.stop()
    }

    override fun getItemCount(): Int {
        return mvideos.size
    }

    class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
        var mPlayer: SimpleExoPlayer? = null
        var playerView: PlayerView = itemView.videos_ret
        var vidId: TextView = itemView.videos_id_ret
    }

}