Optimize middleware for large datasets

**Problem**
When working with types, 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 middleware and type-related error messages but does not identify any files, tests, or entry points. Start by locating the middleware and the current type-error handling, then determine the required message details. Done means the relevant errors are more descriptive and the behavior is covered by tests.

Written by the indexing model from the issue text.