为什么返回的群名为空

array:3 [
  "errcode" => 0
  "errmsg" => "ok"
  "group_chat" => array:6 [
    "chat_id" => "wrDesSDgAAT6SDJirq6nLfkzD6UGzUbg"
    "name" => ""
    "create_time" => 1638176179
    "member_list" => array:5 [
      0 => array:7 [
        "userid" => "LanSiTing"
        "type" => 1
        "join_time" => 1638176179
        "join_scene" => 1
        "invitor" => array:1 [
          "userid" => "LanSiTing"
        ]
        "group_nickname" => ""
        "name" => "蓝思婷"
      ]
      1 => array:7 [
        "userid" => "3084_1634787166"
        "type" => 1
        "join_time" => 1638176179
        "join_scene" => 1
        "invitor" => array:1 [
          "userid" => "LanSiTing"
        ]
        "group_nickname" => ""
        "name" => "3084"
      ]
      2 => array:8 [
        "userid" => "wmDesSDgAASoDe_ahBG1uxf2ZGzFc3rg"
        "type" => 2
        "join_time" => 1638176179
        "join_scene" => 1
        "unionid" => "xxxxxx"
        "invitor" => array:1 [
          "userid" => "LanSiTing"
        ]
        "group_nickname" => ""
        "name" => "cc"
      ]
      3 => array:8 [
        "userid" => "wmDesSDgAAG6cDkY8YIz7uE71f-IksQA"
        "type" => 2
        "join_time" => 1638176179
        "join_scene" => 1
        "unionid" => "xxxxxx-qI"
        "invitor" => array:1 [
          "userid" => "LanSiTing"
        ]
        "group_nickname" => ""
        "name" => "油炸桃子子子子子子子"
      ]
      4 => array:8 [
        "userid" => "wmDesSDgAAK4s5E6GM1dYM0Ri24xSXtg"
        "type" => 2
        "join_time" => 1638176179
        "join_scene" => 1
        "unionid" => "xxxxxx"
        "invitor" => array:1 [
          "userid" => "LanSiTing"
        ]
        "group_nickname" => ""
        "name" => "栗子*"
      ]
    ]
    "admin_list" => []
    "owner" => "LanSiTing"
  ]
]