404 Errors when using searching for resources

[rahulm577]

Hi There,

New to the world of EHR work. I am trying to use client-py to be able to eventually extract admission information from an EHR. I have managed to retrieve basic patient information successfully using this code:

from fhirclient import client
settings = {
    'app_id': 'my_app',
    'api_base': 'https://fhir-open.cerner.com/r4/ec2458f2-1e24-41c8-b71b-0e701af7583d/'
}
smart = client.FHIRClient(settings=settings)

import fhirclient.models.patient as p
patient = p.Patient.read('12724067', smart.server)
patient.birthDate.isostring
smart.human_name(patient.name[0])

However, I am now trying to search for patient resources and keep getting 404 errors despite being seemingly connected to the server.

import fhirclient.models.medication as mo search = mo.Medication.where(struct={'patient': patient.id, 'status': 'active'}) medOrders = search.perform_resources(smart.server)

which results in:

FHIRNotFoundException Traceback (most recent call last)
Cell In[49], line 5
3 import fhirclient.models.medication as mo
4 search = mo.Medication.where(struct={'patient': patient.id, 'status': 'active'})
----> 5 medOrders = search.perform_resources(smart.server)

File ~\anaconda3\envs\smart-on-fhir-client-py-demo\lib\site-packages\fhirclient\models\fhirsearch.py:135, in FHIRSearch.perform_resources(self, server)
128 def perform_resources(self, server):
129 """ Performs the search by calling perform, then extracts all Bundle
130 entries and returns a list of Resource instances.
131
132 :param server: The server against which to perform the search
133 :returns: A list of Resource instances
134 """
--> 135 bundle = self.perform(server)
136 resources = []
137 if bundle is not None and bundle.entry is not None:

File ~\anaconda3\envs\smart-on-fhir-client-py-demo\lib\site-packages\fhirclient\models\fhirsearch.py:123, in FHIRSearch.perform(self, server)
120 raise Exception("Need a server to perform search")
122 from . import bundle
--> 123 res = server.request_json(self.construct())
124 bundle = bundle.Bundle(res)
125 bundle.origin_server = server

File ~\anaconda3\envs\smart-on-fhir-client-py-demo\lib\site-packages\fhirclient\server.py:169, in FHIRServer.request_json(self, path, nosign)
160 """ Perform a request for JSON data against the server's base with the
161 given relative path.
162
(...)
166 :returns: Decoded JSON response
167 """
168 headers = {'Accept': 'application/json'}
--> 169 res = self._get(path, headers, nosign)
171 return res.json()

File ~\anaconda3\envs\smart-on-fhir-client-py-demo\lib\site-packages\fhirclient\server.py:201, in FHIRServer._get(self, path, headers, nosign)
199 # perform the request but intercept 401 responses, raising our own Exception
200 res = self.session.get(url, headers=headers)
--> 201 self.raise_for_status(res)
202 return res

File ~\anaconda3\envs\smart-on-fhir-client-py-demo\lib\site-packages\fhirclient\server.py:298, in FHIRServer.raise_for_status(self, response)
296 raise FHIRPermissionDeniedException(response)
297 elif 404 == response.status_code:
--> 298 raise FHIRNotFoundException(response)
299 else:
300 response.raise_for_status()

FHIRNotFoundException: <Response [404]>

Any help would be appreciated!