Model drop-down in Nvidia AIAA is empty

Operating system:Windows
Slicer version:4.11.0
Expected behavior: Model drop-down should contain organ segmentation in Nvidia AIAA
Actual behavior: Model drop-down in Nvidia AIAA is empty.

Error:
Traceback (most recent call last):
File “C:/Users/John/AppData/Roaming/NA-MIC/Extensions-28723/NvidiaAIAssistedAnnotation/lib/Slicer-4.11/qt-scripted-modules/SegmentEditorNvidiaAIAALib/SegmentEditorEffect.py”, line 164, in onClickFetchModels
models = self.logic.list_models(self.ui.modelFilterLabelLineEdit.text)
File “C:/Users/John/AppData/Roaming/NA-MIC/Extensions-28723/NvidiaAIAssistedAnnotation/lib/Slicer-4.11/qt-scripted-modules/SegmentEditorNvidiaAIAALib/SegmentEditorEffect.py”, line 692, in list_models
result = self.aiaaClient.model_list(label)
File “C:\Users\John\AppData\Roaming\NA-MIC\Extensions-28723\NvidiaAIAssistedAnnotation\lib\Slicer-4.11\qt-scripted-modules\NvidiaAIAAClientAPI\client_api.py”, line 107, in model_list
response = AIAAUtils.http_get_method(self.server_url, selector)
File “C:\Users\John\AppData\Roaming\NA-MIC\Extensions-28723\NvidiaAIAssistedAnnotation\lib\Slicer-4.11\qt-scripted-modules\NvidiaAIAAClientAPI\client_api.py”, line 404, in http_get_method
conn.request(‘GET’, selector)
File “C:\Users\John\AppData\Local\NA-MIC\Slicer 4.11.0-2020-01-08\lib\Python\Lib\http\client.py”, line 1239, in request
self._send_request(method, url, body, headers, encode_chunked)
File “C:\Users\John\AppData\Local\NA-MIC\Slicer 4.11.0-2020-01-08\lib\Python\Lib\http\client.py”, line 1285, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File “C:\Users\John\AppData\Local\NA-MIC\Slicer 4.11.0-2020-01-08\lib\Python\Lib\http\client.py”, line 1234, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File “C:\Users\John\AppData\Local\NA-MIC\Slicer 4.11.0-2020-01-08\lib\Python\Lib\http\client.py”, line 1026, in _send_output
self.send(msg)
File “C:\Users\John\AppData\Local\NA-MIC\Slicer 4.11.0-2020-01-08\lib\Python\Lib\http\client.py”, line 964, in send
self.connect()
File “C:\Users\John\AppData\Local\NA-MIC\Slicer 4.11.0-2020-01-08\lib\Python\Lib\http\client.py”, line 936, in connect
(self.host,self.port), self.timeout, self.source_address)
File “C:\Users\John\AppData\Local\NA-MIC\Slicer 4.11.0-2020-01-08\lib\Python\Lib\socket.py”, line 724, in create_connection
raise err
File “C:\Users\John\AppData\Local\NA-MIC\Slicer 4.11.0-2020-01-08\lib\Python\Lib\socket.py”, line 713, in create_connection
sock.connect(sa)
TimeoutError: [WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond

The segmentation server is up, so if the server is not responding then there is either a network issue (too aggressive firewall, etc.) or you have entered a custom address in Models / NVidia AIAA server (to use the default server, leave the field empty).