Add rate limiting for export

**Problem**
When working with helpers, 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 export entry point and reviewing its current helper error-handling path. The issue does not name a file or test, and its title conflicts with the body; clarify whether the goal is export rate limiting, more descriptive errors, or both before defining what done means.

Written by the indexing model from the issue text.