Getting error in MediaController(this) as i had used this in the adapter class

Question

Getting error in MediaController(this) as i had used this in the adapter class to display video in recycler view. Can you please help me find the cause of the error I get?

This is my implementation:

class VersionAdapter(val versionList:List<Versions>):RecyclerView.Adapter<VersionAdapter.VersionVM>() {

  class VersionVM (itemView: View):RecyclerView.ViewHolder(itemView){

    var codeNameText:TextView=itemView.findViewById(R.id.codename)
    var video11:VideoView=itemView.findViewById(R.id.version)
    var linearLayout:LinearLayout=itemView.findViewById(R.id.linearLayout)
    var expandable_layout:RelativeLayout=itemView.findViewById(R.id.expandable_layout)
  }

  override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): VersionVM {
    val view:View=LayoutInflater.from(parent.context).inflate(R.layout.list_item,parent,false)
    return VersionVM(view)
  }


  override fun onBindViewHolder(holder: VersionVM, position: Int) {
    val versions:Versions=versionList[position]
    holder.codeNameText.text=versions.videoName
    holder.video11.setVideoURI(Uri.parse(versions.version.toString()))

    holder.video11.start()


    val isExpandable:Boolean=versionList[position].expandable
    holder.expandable_layout.visibility=if (isExpandable) View.VISIBLE else View.GONE
    holder.linearLayout.setOnClickListener {
        val versions = versionList[position]
        versions.expandable = !versions.expandable
        notifyItemChanged(position)
    }
 }
}

Thanks in advance!