Why does data return an empty response in instaram messaging and how to fix it?

Question

Facebook

Following Facebook official documentation https://developers.facebook.com/docs/instagram-api...
there was a problem at the last step. Data returns an empty response.
Example answer:

{
  "data": [
    {
      "id": "aWdfZAG06MTpJR01lc3NhZA2VUaHJlYWQ6OTAwMTAxNDYyOTkyODI6MzQwMjgyMzY2ODQxNzEwMzAwOTQ5MTI4MTM2MDk5MDc1MzYyOTgx"
    },
    {
      "id": "aWdfZAG06MTpJR01lc3NhZA2VUaHJlYWQ6OTAwMTAxNDYyOTkyODI6MzQwMjgyMzY2ODQxNzEwMzAwOTQ5MTI4MTYzMzQ2MzE5NjM1NDcy"
    },
    {
      "id": "aWdfZAG06MTpJR01lc3NhZA2VUaHJlYWQ6OTAwMTAxNDYyOTkyODI6MzQwMjgyMzY2ODQxNzEwMzAwOTQ5MTI4MTk3MTY0NjI2NzAyMjMw"
    },
    {
      "id": "aWdfZAG06MTpJR01lc3NhZA2VUaHJlYWQ6OTAwMTAxNDYyOTkyODI6MzQwMjgyMzY2ODQxNzEwMzAwOTQ5MTI4MzkzNDI5MDYzMzkyNjU0"
    }
}

my answer :

{
  "data": [
  ],
  "paging": {
    "cursors": {
      "after": "ZAXlKMGFXMWxjM1JoYlh9qRTJNRE13TVRrE1EUXNJblJvY21WaFpBRjlwWkFDSTZAJak0wTURJNE1qTTJOamcwTVRjeE1ETXdNRGswT1RFeU9ERXlNell6TVRnd056VTBPREkwTlNKQZDZD"
    },
    "next": "https://graph.facebook.com/v12.0/112411937901814/conversations?access_token=EAAFntWltQaUBABOfwZA3S64zxPOPZB3eUMkirQMCHWpux2ZAsgzL2Do5TCCh5ja5Tj9wsh1F9SWZAMHLn8kmupCkOo1G24eCqzMHeZAgWhistt2ApXX2r1AEbfquBxLPZBQcN0WMikwhhHg4Ic7YZChILndxmVNRfRrgqZCvSbTeuUlamFSwMmRZAYAWZC23bSVkGlv2L1Fjk7zyV4paJksk&pretty=0&platform=instagram&limit=25&after=ZAXlKMGFXMWxjMYlhBaU9qRTJNRE13TVRrME1EUXNJblJvY21WaFpBRjlwWkFDSTZAJak0wTURJNE1qTTJOamcwTVRjeE1ETXdNRGswT1RFeU9ERXlNell6TVRnd056VTBPREkwTlNKOQDZD"
  }
}

Answer 1

Well, what kind of request is this and the answer is probably?