expand=true throws error

[Szűcs Roland]

Hi All,

I manage to use edismax queryparser in solr 8.4.1 with collapse without any
problem. I tested it with the SOLR admin GUI. So fq={!collapse field=title}
worked fine.

As soon as I use the example from the documentation and use:  fq={!collapse
field=title}&expand=true, I did not get back any additional output with
section expanded.

Any idea?

Thanks in advance,
Roland