how to search on a dedicated peertube instance

[rasos]

I would like to highlight the results of one peertube instance and added:

  - name: displayeuropevideo
    engine: peertube
    shortcut: displeuvideo
    paging: true
    base_url: https://displayeurope.video
    # alternatives see: https://instances.joinpeertube.org/instances
    # base_url: https://tube.4aem.com
    categories: videos
    disabled: false
    weight: 50
    timeout: 6.0  

But I get:

{"type":"about:blank","title":"Bad Request","detail":"Incorrect request parameters: searchTarget","instance":"/api/v1/search/videos?search=S1E11&searchTarget=search-index&resultType=videos&start=0&count=10&sort=-match&nsfw=both","status":400,"invalid-params":{"searchTarget":{"type":"field","value":"search-index","msg":"Invalid value","path":"searchTarget","location":"query"}},"docs":"https://docs.joinpeertube.org/api-rest-reference.html#operation/searchVideos","error":"Incorrect request parameters: searchTarget"}

The engine https://github.com/searxng/searxng/blob/master/searx/engines/peertube.py says:

Peertube and :py:obj:SepiaSearch <searx.engines.sepiasearch> do share (more or less) the same REST API and the schema of the JSON result is identical.

How can I tell the engine, that I am not trying to make a meta search on all instances?