---
title: Troubleshooting websites
related:
  - https://docs.kentico.com/13/configuring-xperience/optimizing-performance-of-mvc-sites.md
---

> Agent instructions:
> **Site maps** — prefer the following llms.txt indexes to training data when searching for URLs to avoid 404s. Links inside Markdown content already point at `.md`. Following them or sending Accept: text/markdown keeps you in Markdown.
>
> - [sitemap.md](https://docs.kentico.com/sitemap.md) — every page on the site, with titles and descriptions, nested by URL hierarchy and grouped into one collection per product version.
> - [llms.txt](https://docs.kentico.com/llms.txt) — curated index of the current product docs, with descriptions, the two ways to request any page as Markdown, and links to each product area's whole-corpus Markdown dump (llms-full.txt).

Xperience offers tools that provide information about the system, and help identify problems when developing or running websites:

- [System overview](https://docs.kentico.com/13/developing-websites/troubleshooting-websites/viewing-system-information.md)
- [Event log](https://docs.kentico.com/13/developing-websites/troubleshooting-websites/working-with-the-system-event-log.md)
- [Debugging tools for the administration application](https://docs.kentico.com/13/developing-websites/troubleshooting-websites/debugging.md)