Improve error messages in components

**Problem**
When working with data, 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 does not name any files, tests, or entry points. Start by locating the component error-handling paths and the data-processing code, then identify which failures currently lack context. Done means the relevant errors provide more descriptive messages and the behavior is covered by appropriate tests.

Written by the indexing model from the issue text.