BUG533：アプリインポート時エラー発生時のメッセージ表示

backend/app/api/api_v1/routers/kintone.py

@@ -194,8 +194,9 @@ def addfieldstokintone(app:str,fields:dict,c:config.KINTONE_ENV,revision:str = N
     else:
         data = {"app":app,"properties":fields}
     r = httpx.post(url,headers=headers,data=json.dumps(data))
+    r.raise_for_status()
     return r.json()
-
+ 
 def updatefieldstokintone(app:str,revision:str,fields:dict,c:config.KINTONE_ENV):
     headers={config.API_V1_AUTH_KEY:c.API_V1_AUTH_VALUE,"Content-Type": "application/json"}
     url = f"{c.BASE_URL}{config.API_V1_STR}/preview/app/form/fields.json"