Add unit tests for routes

**Problem**
When working with components, the error messages could be more descriptive.

**Suggestion**
Improve error handling and add detailed error messages.

**Context**
This would help with debugging and maintenance.

Start by locating the route handling entry points and any existing unit tests for routes. Review how component errors are currently reported and identify the error cases covered by the issue. Done means route tests exist and error messages provide the requested debugging detail.

Written by the indexing model from the issue text.