500 error for GET requests on demo server

[sra-wng]

NOTE: Before filing a ticket, please see the following URL: https://github.com/hapifhir/hapi-fhir/wiki/Getting-Help

Describe the bug Seeing a 500 error for GET requests on the demo server with the following message: "Failed to call access method: org.springframework.dao.InvalidDataAccessApiUsageException: Timer already cancelled.; nested exception is java.lang.IllegalStateException: Timer already cancelled."

To Reproduce Steps to reproduce the behavior:

1. Go to http://hapi.fhir.org/
2. Make a GET request, e.g. GET http://hapi.fhir.org/baseR4/Encounter/123
3. See error

Expected behavior 200 code and requested resources

Environment (please complete the following information):

• HAPI FHIR Version R4
• OS: Mac OS Big Sur 11.5.1
• Browser: Chrome Version 92.0.4515.131 (Official Build) (x86_64)

[KevinDougan]

When looking at the Home Page, I see this:

Warning!
Failed to load conformance statement, error was: 
ca.uhn.fhir.rest.client.exceptions.FhirClientConnectionException: Connection pool shut down