I am developing the google map api. When I use the Text search API, I set the parameter languagecode=’zh-TW’, but the primaryTypeDisplayName field in the returned josn returns en.

I used it last month It was normal and Chinese was returned, but this week this error occurred.
My code has not been changed. How should I solve it?

Thanks

{
  "textQuery": "Taipei 101",
  "languageCode": "zh-TW"
  
}

{
  "places": [
    {
      "name": "places/ChIJH56c2rarQjQRphD9gvC8BhI",
      "id": "ChIJH56c2rarQjQRphD9gvC8BhI",
      "types": [
        "premise"
      ],
      "formattedAddress": "Taipei 101, No. 7信義路五段信義區台北市台灣 110",
      "addressComponents": [
        {
          "longText": "Taipei 101",
          "shortText": "Taipei 101",
          "types": [
            "premise"
          ],
          "languageCode": "en"
        },
        {
          "longText": "7",
          "shortText": "7",
          "types": [
            "street_number"
          ],
          "languageCode": "zh-TW"
        },
        {
          "longText": "信義路五段",
          "shortText": "信義路五段",
          "types": [
            "route"
          ],
          "languageCode": "zh-TW"
        },
        {
          "longText": "西村里",
          "shortText": "西村里",
          "types": [
            "administrative_area_level_3",
            "political"
          ],
          "languageCode": "zh-TW"
        },
        {
          "longText": "信義區",
          "shortText": "信義區",
          "types": [
            "administrative_area_level_2",
            "political"
          ],
          "languageCode": "zh-TW"
        },
        {
          "longText": "台北市",
          "shortText": "台北市",
          "types": [
            "administrative_area_level_1",
            "political"
          ],
          "languageCode": "zh-TW"
        },
        {
          "longText": "台灣",
          "shortText": "TW",
          "types": [
            "country",
            "political"
          ],
          "languageCode": "zh-TW"
        },
        {
          "longText": "110",
          "shortText": "110",
          "types": [
            "postal_code"
          ],
          "languageCode": "zh-TW"
        }
      ],
      "location": {
        "latitude": 25.033976,
        "longitude": 121.56453889999999
      },
      "viewport": {
        "low": {
          "latitude": 25.032492119708493,
          "longitude": 121.56316601970849
        },
        "high": {
          "latitude": 25.0351900802915,
          "longitude": 121.56586398029148
        }
      },
      "googleMapsUri": "https://maps.google.com/?cid=1298933283718762662",
      "websiteUri": "http://www.taipei-101.com.tw/index_en.htm",
      "utcOffsetMinutes": 480,
      "adrFormatAddress": "Taipei 101, u003cspan class="street-address"u003eNo. 7信義路五段西村里u003c/spanu003eu003cspan class="locality"u003e信義區u003c/spanu003eu003cspan class="region"u003e台北市u003c/spanu003eu003cspan class="country-name"u003e台灣u003c/spanu003e u003cspan class="postal-code"u003e110u003c/spanu003e",
      "iconMaskBaseUri": "https://maps.gstatic.com/mapfiles/place_api/icons/v2/generic_pinlet",
      "iconBackgroundColor": "#7B9EB0",
      "displayName": {
        "text": "Taipei 101",
        "languageCode": "en"
      },
      "primaryTypeDisplayName": {
        "text": "Building",
        "languageCode": "en"
      },
      "primaryType": "premise",
      "shortFormattedAddress": "信義路五段7號",
      "editorialSummary": {
        "text": "有 106 層樓的高聳現代摩天大廈，設有燈光特效、商店、餐廳和觀景台。",
        "languageCode": "zh-TW"
      },

I read the relevant documentation, but didn’t see the instructions.
Testing the APIs Explorer on Google Map Platform also showed the same result.