Consider deprecating old components API

**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.

The issue identifies no files, tests, or entry points. Start by locating the components API and its current error handling, then clarify which API is considered old and what deprecation behavior and message changes are expected. Done requires an agreed scope plus tests covering the resulting behavior.

Written by the indexing model from the issue text.