腾讯云调用ocr接口是返回错误码14

import requests
import json

# 腾讯云OCR API的URL
url = "https://api.ocr.tencentcloudapi.com"

# 请求头部信息
headers = {
    "Content-Type": "application/json",
    "Authorization": "TC3-HMAC-SHA256 Credential=AKID.../2019-11-18/ocr/tc3_request, SignedHeaders=content-type;host, Signature=..."
}

# 请求体，这里以通用文字识别为例
data = {
    "ImageBase64": "...",  # 图片的Base64编码
    "Language": "eng"      # 语言类型
}

try:
    response = requests.post(url, headers=headers, data=json.dumps(data), timeout=10)
    response.raise_for_status()  # 如果响应状态码不是200，将抛出HTTPError异常
    result = response.json()
    print(result)
except requests.exceptions.HTTPError as errh:
    print ("Http Error:",errh)
except requests.exceptions.ConnectionError as errc:
    print ("Error Connecting:",errc)
except requests.exceptions.Timeout as errt:
    print ("Timeout Error:",errt)
except requests.exceptions.RequestException as err:
    print ("Something Else:",err)