这个异常通常是由于传递给Microsoft Translator API的数据格式不正确引起的。下面是一个示例代码，演示了如何使用Microsoft Translator API，并处理可能出现的异常。

import requests

def translate_text(text, target_language):
    subscription_key = 'YOUR_SUBSCRIPTION_KEY'
    endpoint = 'https://api.cognitive.microsofttranslator.com/translate?api-version=3.0'

    headers = {
        'Ocp-Apim-Subscription-Key': subscription_key,
        'Content-Type': 'application/json',
        'Ocp-Apim-Subscription-Region': 'YOUR_REGION'
    }

    data = [{
        'text': text
    }]

    params = {
        'api-version': '3.0',
        'to': target_language
    }

    try:
        response = requests.post(endpoint, headers=headers, params=params, json=data)
        response.raise_for_status()
        translation = response.json()[0]['translations'][0]['text']
        return translation
    except requests.exceptions.RequestException as error:
        print('Error:', error)
    except KeyError as error:
        print('Invalid response:', error)

# 示例调用
try:
    translated_text = translate_text('Hello', 'fr')
    print(translated_text)
except Exception as error:
    print('Translation failed:', error)

请确保将示例代码中的YOUR_SUBSCRIPTION_KEY替换为您自己的Microsoft Translator API密钥，并将YOUR_REGION替换为您的订阅区域。