HyperlinkRelated creating invalid endpoint

[Makistos]

For some reason HyperlinkRelated seems to create an invalid endpoint with HyperlinkRelated which Flask rejects:

Exception has occurred: BuildError (note: full exception trace is shown but execution is paused at: api_GetMagazine) Could not build url for endpoint '/api/publishers' with values ['id']. Did you mean 'publishers' instead?

These are my models:

class MagazineSchema(ma.SQLAlchemySchema):
    class Meta:
        model = Magazine
    id = ma.auto_field()
    name = ma.auto_field()
    publisher = ma.HyperlinkRelated(
        endpoint='/api/publishers')

class PublisherSchema(ma.SQLAlchemySchema):
    class Meta:
        model = Publisher
    id = ma.auto_field()

And this is what that API looks like:

@app.route('/api/publishers/<id>', methods=['get'])
def api_GetPublisher(id: Any) -> Any:
    options = {}
    options['publisherId'] = id
    return GetPublisher(options)

This API works with curl.

And this is how I try to dump the results in GetPublisher:

schema = MagazineSchema()
retval = schema.dump(magazine)

Am I doing something wrong? I can't figure out what that could be. I tried both with AutoSchema and Schema and both give the same result.

[Makistos]

I did figure it out which leaves me with an issue: if I give the view name the url is wrong (/publishers/) rather than the one shown above. Oh well, I guess I have to either add a URI field by hand or create it in the front-end from the id.