Add unit tests for components

**Problem**
When working with utils, 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 utils and components referenced in the issue, then inspect the repository’s existing unit-test setup and current error handling. Clarify which error cases need more descriptive messages before making changes. Done means the selected error paths have detailed messages and unit tests that verify them.

Written by the indexing model from the issue text.