Improve controllers performance

**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.

The issue names controllers and utils but provides no file paths, tests, or entry points. Start by locating the controller utility code and its existing error-handling paths; clarify which messages need improvement and what error cases and tests define completion.

Written by the indexing model from the issue text.