SE fetch function

[Kojo]

I am upgrading from Solr 6.6 to 9.0

I have some SE working fine on 6.6, where I fetch some fields to enrich the
gatherNodes fucntion result-set.

Bellow is a much more simple example, where I am trying to fetch some
fields:

fetch(my_collection,
search(my_collection, qt="/export", q=*:*, fl="numero_processo",
sort="numero_processo asc", fq=(any_fq_exact:"any" AND
django_ct:"django_ct"), )
,fl="fomento_status_facet, data_inicio_ano ",
on="numero_processo=numero_processo",)


It was supposed to fetch the fields fl="fomento_status_facet,
data_inicio_ano", but the result-set does't carry this fields:

{
  "result-set": {
    "docs": [
      {
        "numero_processo": "05/51689-2"
      },
      {
        "numero_processo": "13/07276-1"
      },
      {
        "numero_processo": "13/07296-2"
      },
      {


Any hint?


Thank you!