[BUG] Error handling if user does not exist

[mi01]

Describe the bug

I try to retrieve public user data for a list of TikTok accounts. This usually works fine, but there are some issues with this library, which should be fixed.

The buggy code

async with TikTokApi() as api:
    await api.create_sessions(
        ms_tokens=[ms_token],
        num_sessions=1,
        sleep_after=3,
        executable_path="/opt/google/chrome/google-chrome",
    )

    user = api.user(username=username)
    user_info = None
    try:
        user_info = await user.info()
        print(f"SUCCESS: {username}")
    except (KeyError, exceptions.InvalidResponseException, exceptions.EmptyResponseException, Exception) as e:
        print(f"ERROR: {e} :: https://www.tiktok.com/@{username} :: {user_info}")

Expected behavior

If the account does not exist, I expect to get a meaningful exception. But when running the code above for a non-existing account I get the following response from TikTok:

{"extra":{"fatal_item_ids":[],"logid":"...","now":1717514022000},"log_pb": "impr_id":"..."},"statusCode":10221,"status_code":0,"status_msg":"","userInfo":{}}

In my code example above this response triggers a KeyError instead of a meaningful exception. So I had a look into this library. make_request() in tiktok.py checks, if the result is None or an empty string or if we can decode the JSON or if status_code != 0.

TikTok-Api/TikTokApi/tiktok.py

Lines 433 to 451 in 5a249c4

	result = await self.run_fetch_script(
	signed_url, headers=headers, session_index=i
	)
	if result is None:
	raise Exception("TikTokApi.run_fetch_script returned None")
	if result == "":
	raise EmptyResponseException(result, "TikTok returned an empty response")
	try:
	data = json.loads(result)
	if data.get("status_code") != 0:
	self.logger.error(f"Got an unexpected status code: {data}")
	return data
	except json.decoder.JSONDecodeError:
	if retry_count == retries:
	self.logger.error(f"Failed to decode json response: {result}")
	raise InvalidJSONException()

None of this error conditions is true for this response. Then info() in user.py tries to extract data with __extract_from_data() not present in the response, so a KeyError is raised.

By the way, if the account does exist "statusCode": 0 is in the response.

But there is another issue, which makes it hard to distinguish between a non-existing account and this other case. When retrieving user data for several accounts, sometimes this error occurs:

2024-06-04 17:36:14,559 - TikTokApi.tiktok - ERROR - Got an unexpected status code: {'userInfo': {'user': {}, 'stats': {}, 'shareMeta': {}}}

And again in this case I get a KeyError instead of an meaningful exception, since none of the error conditions apply. For both cases user.info() return None by the way.

Thank you for this great library. But the error handling needs some updates, probably because TikTok slightly changed its API.

Desktop (please complete the following information):

• OS: Linux 5.15.146.1-microsoft-standard-WSL2
• Python 3.12.2
• TikTokApi Version 6.3.0