api = TqApi() 执行后，发生以下异常信息，请问是什么情况：
环境： mac os + pycharm + python3.7
SSL handshake failed on verifying the certificate
protocol: <asyncio.sslproto.SSLProtocol object at 0x117db2da0>
transport: <_SelectorSocketTransport fd=10 read=polling write=<idle, bufsize=0>>
Traceback (most recent call last):
File “/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/asyncio/sslproto.py”, line 625, in _on_handshake_complete
raise handshake_exc
File “/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/asyncio/sslproto.py”, line 189, in feed_ssldata
self._sslobj.do_handshake()
File “/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/ssl.py”, line 763, in do_handshake
self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1056)
SSL error in data received