Node fails to start without a clear explanation

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Description

Sometimes the node just doesn’t start, and the error message doesn’t really explain why. It’s hard to tell what’s missing or what needs to be fixed.

To Reproduce

Set up the node and try to start it with an incomplete or slightly wrong configuration. The node fails and shows a pretty vague error.

Expected behavior

The node should say clearly what went wrong and what needs to be fixed.

Proposed solution

Make the startup errors more human and specific, so it’s easier to understand what to do next.