Monailabel-Plugin in XNAT OHIF Viewer status code 500

[Ben-Herz]

Describe the bug
Open Monailabel Plugin from XNAT OHIF Viewer shows a http status code 500. Debugging reveals a 401 when trying to get all XNAT projects over the XNAT api in xnat.py.

Server logs
OHIF error:

GET https://xnat.<...>.ch/info/ 500 (Internal Server Error)
(anonymous) @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
e.exports @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
e.exports @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
Promise.then
s.request @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
a.forEach.s.<computed> @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
(anonymous) @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
_E @ app.bundle.aef1aaedd2166485be4f.js:1
(anonymous) @ app.bundle.aef1aaedd2166485be4f.js:1
c @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
(anonymous) @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
(anonymous) @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
Ii @ app.bundle.aef1aaedd2166485be4f.js:1
E @ app.bundle.aef1aaedd2166485be4f.js:1
(anonymous) @ app.bundle.aef1aaedd2166485be4f.js:1
(anonymous) @ app.bundle.aef1aaedd2166485be4f.js:1
(anonymous) @ app.bundle.aef1aaedd2166485be4f.js:1
(anonymous) @ app.bundle.aef1aaedd2166485be4f.js:1
c @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
(anonymous) @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
(anonymous) @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
ti @ app.bundle.aef1aaedd2166485be4f.js:1
E @ app.bundle.aef1aaedd2166485be4f.js:1
(anonymous) @ app.bundle.aef1aaedd2166485be4f.js:1
(anonymous) @ app.bundle.aef1aaedd2166485be4f.js:1
(anonymous) @ app.bundle.aef1aaedd2166485be4f.js:1
c @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
(anonymous) @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
(anonymous) @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
so @ app.bundle.aef1aaedd2166485be4f.js:1
E @ app.bundle.aef1aaedd2166485be4f.js:1
(anonymous) @ app.bundle.aef1aaedd2166485be4f.js:1
(anonymous) @ app.bundle.aef1aaedd2166485be4f.js:1
value @ app.bundle.aef1aaedd2166485be4f.js:1
xu @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
t.unstable_runWithPriority @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
ja @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
Qu @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
Su @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
(anonymous) @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
t.unstable_runWithPriority @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
ja @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
Ka @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
qa @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
se @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2
En @ vendors~app.bundle.6ca4aaacffe42287ff12.js:2

Monai error log:

[MainThread] [ERROR] (uvicorn.error:412) - Exception in ASGI application
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/dist-packages/requests/models.py", line 974, in json
    return complexjson.loads(self.text, **kwargs)
  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):
  File "/usr/local/lib/python3.10/dist-packages/uvicorn/protocols/http/h11_impl.py", line 407, in run_asgi
    result = await app(  # type: ignore[func-returns-value]
  File "/usr/local/lib/python3.10/dist-packages/uvicorn/middleware/proxy_headers.py", line 69, in __call__
    return await self.app(scope, receive, send)
  File "/usr/local/lib/python3.10/dist-packages/fastapi/applications.py", line 1054, in __call__
    await super().__call__(scope, receive, send)
  File "/usr/local/lib/python3.10/dist-packages/starlette/applications.py", line 123, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/usr/local/lib/python3.10/dist-packages/starlette/middleware/errors.py", line 186, in __call__
    raise exc
  File "/usr/local/lib/python3.10/dist-packages/starlette/middleware/errors.py", line 164, in __call__
    await self.app(scope, receive, _send)
  File "/usr/local/lib/python3.10/dist-packages/starlette/middleware/cors.py", line 85, in __call__
    await self.app(scope, receive, send)
  File "/usr/local/lib/python3.10/dist-packages/starlette/middleware/exceptions.py", line 65, in __call__
    await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)
  File "/usr/local/lib/python3.10/dist-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/usr/local/lib/python3.10/dist-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/usr/local/lib/python3.10/dist-packages/starlette/routing.py", line 756, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/usr/local/lib/python3.10/dist-packages/starlette/routing.py", line 776, in app
    await route.handle(scope, receive, send)
  File "/usr/local/lib/python3.10/dist-packages/starlette/routing.py", line 297, in handle
    await self.app(scope, receive, send)
  File "/usr/local/lib/python3.10/dist-packages/starlette/routing.py", line 77, in app
    await wrap_app_handling_exceptions(app, request)(scope, receive, send)
  File "/usr/local/lib/python3.10/dist-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/usr/local/lib/python3.10/dist-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/usr/local/lib/python3.10/dist-packages/starlette/routing.py", line 72, in app
    response = await func(request)
  File "/usr/local/lib/python3.10/dist-packages/fastapi/routing.py", line 278, in app
    raw_response = await run_endpoint_function(
  File "/usr/local/lib/python3.10/dist-packages/fastapi/routing.py", line 191, in run_endpoint_function
    return await dependant.call(**values)
  File "/usr/local/lib/python3.10/dist-packages/monailabel/endpoints/info.py", line 33, in api_app_info
    return app_info()
  File "/usr/local/lib/python3.10/dist-packages/monailabel/endpoints/info.py", line 28, in app_info
    return instance.info()
  File "/usr/local/lib/python3.10/dist-packages/monailabel/interfaces/app.py", line 226, in info
    "datastore": self._datastore.status(),
  File "/usr/local/lib/python3.10/dist-packages/monailabel/datastore/xnat.py", line 204, in status
    "total": len(self.list_images()),
  File "/usr/local/lib/python3.10/dist-packages/monailabel/datastore/xnat.py", line 131, in list_images
    for p in response.json().get("ResultSet", {}).get("Result", []):
  File "/usr/local/lib/python3.10/dist-packages/requests/models.py", line 978, in json
    raise RequestsJSONDecodeError(e.msg, e.doc, e.pos)
requests.exceptions.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

To Reproduce
Setup Monai Plugin for XNAT OHIF viewer according to:
Integration-with-Xnat-Research-PACS

Expected behavior
Show Monai model selection

Environment

• XNAT: 1.9.1.2 build 132
• OHIF-XNAT Viewer: 3.7.1