I am using gb in django backend app to feature flag few things. I have created middleware and added to request. when I am trying to get feature value its giving me this error. Adding the error log below

WARNING:urllib3.connectionpool:Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:997)'))': /api/features/sdk-
WARNING:growthbook:Failed to decode feature JSON from GrowthBook API
list------------>
Feature flags: {}
WARNING:growthbook:Unknown feature use-db
WARNING:urllib3.connectionpool:Connection pool is full, discarding connection: <http://cdn.growthbook.io|cdn.growthbook.io>. Connection pool size: 1
WARNING:growthbook:Failed to decode feature JSON from GrowthBook API
WARNING:growthbook:Unknown feature use-graphdb
WARNING:growthbook:Unknown feature use-graphdb
WARNING:urllib3.connectionpool:Connection pool is full, discarding connection: <http://cdn.growthbook.io|cdn.growthbook.io>. Connection pool size: 1
WARNING:growthbook:Failed to decode feature JSON from GrowthBook API
WARNING:urllib3.connectionpool:Connection pool is full, discarding connection: <http://cdn.growthbook.io|cdn.growthbook.io>. Connection pool size: 1
WARNING:growthbook:Failed to decode feature JSON from GrowthBook API
WARNING:growthbook:Unknown feature use-graphdb