Delete ghost song / items from playlist

[behtjes]

Plan

Premium

Country

NL

Device

ALL

Operating System

(iOS 10, Android Oreo, Windows 10,etc.)

My Question or Issue

When I delete all my songs from my playlist, spotify still tells me there is 1 song in my playlist (it's not hidden or a local file, it's just a 'ghost' song)

This is the output from the developer api: 

curl -X "GET" "https://api.spotify.com/v1/playlists/2XC30ir8VgKLOc7aRLnrrp/tracks" -H "Accept: application/json" -H "Content-Type: application/json" -H "Authorization: Bearer BQD1TxuLVTcGrOfMHjsw88liMYDT44zQAkF3j8gah5kqkBSS1W6FVqmw-CMkcivEWvZ20hv8jw5RtfEQMtlh4ZBJQT0BkymVImUIdYsTXqoWnh1bfGyz49q5xqIsQ20JY0z2pyc_xEtT0aJwu6J-eFquxFuF7P_9uKksxmCnFEHLbNOL4FU_js7xYovXTSczGfo1lQ_c-3Qg5M1as34"

{
  "href": "https://api.spotify.com/v1/playlists/2XC30ir8VgKLOc7aRLnrrp/tracks?offset=0&limit=100",
  "items": [
    {
      "added_at": "2021-05-02T16:22:28Z",
      "added_by": {
        "external_urls": {
          "spotify": "https://open.spotify.com/user/117300768"
        },
        "href": "https://api.spotify.com/v1/users/117300768",
        "id": "117300768",
        "type": "user",
        "uri": "spotify:user:117300768"
      },
      "is_local": false,
      "primary_color": null,
      "track": null,
      "video_thumbnail": null
    }
  ],
  "limit": 100,
  "next": null,
  "offset": 0,
  "previous": null,
  "total": 1
}

I don't know this user 

"id": "117300768",

The playlist isn't public. How can I remove this 'item' from my playlist? I guess it's messing up my 'total' songs on my playlist.