Return an error when we fail to instantiate the server #3642
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What changed?
We now return an error when FX fails to build the server.
Why?
I made this change so that we can verify that a new server can be instantiated for all services without failing, but that failures will be detected.
How did you test it?
I tested this by adding unit tests for the happy path and an error path (invalid config path). I also ran it locally with race detection on.
Potential risks
This is a new error message, and some invalid configs may trigger this error path when they didn't before.
Is hotfix candidate?
No.