Following error was encountered today around 11.30am. Why? Any update in the code? Server issue?
```
Traceback (most recent call last):
File "/home/ubuntu/.local/lib/python3.10/site-packages/kiteconnect/connect.py", line 905, in _request
data = json.loads(r.content.decode("utf8"))
File "/usr/lib/python3.10/json/__init__.py", line 346, in loads
return _default_decoder.decode(s)
File "/usr/lib/python3.10/json/decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/lib/python3.10/json/decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
.
.
.
.
m_ltp = kite.ltp(m_instru)
File "/home/ubuntu/.local/lib/python3.10/site-packages/kiteconnect/connect.py", line 606, in ltp
return self._get("market.quote.ltp", params={"i": ins})
File "/home/ubuntu/.local/lib/python3.10/site-packages/kiteconnect/connect.py", line 842, in _get
return self._request(route, "GET", url_args=url_args, params=params, is_json=is_json)
File "/home/ubuntu/.local/lib/python3.10/site-packages/kiteconnect/connect.py", line 907, in _request
raise ex.DataException("Couldn't parse the JSON response received from the server: {content}".format(
kiteconnect.exceptions.DataException: Couldn't parse the JSON response received from the server: b'

503 Service Unavailable

\nNo server is available to handle this request.\n\n'
```