Handle edge cases in pagination

**Problem**
When working with controllers, 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 controller code that handles pagination and its existing error-handling paths. Read how pagination failures are currently reported, then identify the relevant edge cases and add coverage for the intended descriptive messages. Done means the affected errors provide useful debugging context and the tests pass.

Written by the indexing model from the issue text.