Setting the

apollo_url

under

[server.ui]

in the

.prefect/config.toml

file does not appear to be working. How do I change the host that the UI will call to access the API?

this is how it's supposed to be set - just an example:

[server]
endpoint = "<http://localhost:4203/graphql>"

  [server.ui]
    apollo_url = "<http://localhost:4203/graphql>"