Handle edge cases in caching

**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 file, entry point, or test is identified in the issue. Locate the caching and component error-handling paths, then reproduce the relevant edge cases before deciding which messages need more detail. Done means the affected errors are descriptive and coverage exists for the caching edge cases.

Written by the indexing model from the issue text.