Improve handlers performance

**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.

No files, tests, or entry points are named. Start by locating the component handlers and their existing error paths, then determine the intended scope between the performance-focused title and the request for more descriptive errors; done should be confirmed by maintainer agreement and tests covering the revised error handling.

Written by the indexing model from the issue text.