Invalid AssertionConsumerService in request

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Problem reference: 19082022-1AMJVB2Q

Atacama platform activity:
LevelCategoryMessage
INFOcore >>>19082022-1AMJVB2Q Invoking flow: authentication_response
WARNcore Data-source 'Apache:request' failed to return any data for parameter 'userID' with match: user
ERRORremote Module server returned: ERROR: Failed to contact remote service 1
ERRORremote Cannot invoke data-source 'JSONData:attributes' because execution context is unavailable
ERRORsaml Invalid or missing assertion consumer service URL in request from entity: https://subscription.echalk.co.uk/shibboleth
WARNcore Action failed for provider 'SAML:receiveAuthNRequest' in 'authentication_response' flow. Returned status was: InvalidACSURL
WARNcore Data-source 'Apache:request' failed to return any data for parameter 'OA_USER' with match: user
WARNsaml No available response
WARNsaml No available assertion consumer service URL
WARNcore Data-source 'Apache:request' failed to return any data for parameter 'prepend' with match: user
INFOcore <<<19082022-1AMJVB2Q End flow: authentication_response