NotImplementedError

While trying to install h5serv, I encountered the following error:
```
PS D:\hdf_related\h5serv> python h5serv
Using logfile: h5serv.log
password_uri config: util/admin/passwd.h5
Setting log level to: INFO
INFO:app.py:3312::log test
favicon_path: favicon.ico
Static content in the path:static will be displayed via the url: /views/(.*)
isdebug: True
domain: hdfgroup.org
ssl_port: 6050
Setting watchdog on: data
INFO:passwordUtil.py:56::getAuthClient
INFO:passwordUtil.py:58::password_uri:util/admin/passwd.h5
INFO:authFile.py:33::AuthFile class init(util/admin/passwd.h5)
Traceback (most recent call last):
File "C:\Anaconda3\lib\runpy.py", line 194, in _run_module_as_main
return _run_code(code, main_globals, None,
File "C:\Anaconda3\lib\runpy.py", line 87, in _run_code
exec(code, run_globals)
File "h5serv\__main__.py", line 7, in
app.main()
File "D:\hdf_related\h5serv\h5serv\app.py", line 3358, in main
server.listen(port)
File "C:\Anaconda3\lib\site-packages\tornado\tcpserver.py", line 152, in listen
self.add_sockets(sockets)
File "C:\Anaconda3\lib\site-packages\tornado\tcpserver.py", line 165, in add_sockets
self._handlers[sock.fileno()] = add_accept_handler(
File "C:\Anaconda3\lib\site-packages\tornado\netutil.py", line 279, in add_accept_handler
io_loop.add_handler(sock, accept_handler, IOLoop.READ)
File "C:\Anaconda3\lib\site-packages\tornado\platform\asyncio.py", line 100, in add_handler
self.asyncio_loop.add_reader(fd, self._handle_events, fd, IOLoop.READ)
File "C:\Anaconda3\lib\asyncio\events.py", line 501, in add_reader
raise NotImplementedError
NotImplementedError
```
I cloned the hdf5-json, cd to hdf5-json, ran install.
went back one directory, cloned h5serv, cd h5serv.

On doing `python h5serv` here, I get the error.

Environment is conda with python 3.6.10, h5py 2.10.0, tornado 6.0.4, numpy 1.17.0, watchdog 0.10.3, requests 2.24.0.

Running on Windows 10 Pro.