---
title: How to Locate AI Chat Copilot Log Files
description: Learn how to enable Debug Mode in AI Chat Copilot and locate the astah-copilot.log file on Windows and macOS for bug submissions.
---
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3. [AI Chat Copilot / Diagnostic Data](https://lp.astah.net/en/knowledge-base/reporting-a-bug-in-astah?hsLang=en#ai-chat-copilot-diagnostic-data)
# How to Locate AI Chat Copilot Log Files
## Enabling debug mode and finding the astah-copilot.log file for error reporting.
If you encounter an issue while using the AI Chat Copilot, the Astah support team may request a specific log file called `astah-copilot.log` to investigate the bug. To ensure this file contains the necessary diagnostic data, you must first enable **Debug Mode**.
### 1. Enable Debug Mode
Before collecting the log, follow these steps to capture the technical details of the error:
1. Open the **Settings** menu within the AI Chat Copilot view.
2. Navigate to the **General** tab.
3. Check the **\[Debug Mode\]** box and click **\[OK\]**.
4. **Reproduce the issue:** Run your prompt or action again. This ensures the relevant error data is written to the log.
---
### 2. Log File Location
After reproducing the error, the `astah-copilot.log` file can be found in the directory corresponding to your Astah edition.
| **Edition** | **Directory Folder** |
| --- | --- |
| **Astah Professional** | `professional` |
| **Astah UML** | `uml` |
| **Astah SysML** | `astahsysml` |
| **Astah System Safety** | `astahsystemsafety` |
#### Directory Paths
**USER\_HOME\\.astah\\ \< edition\_folder\>**
Because the `.astah` folder starts with a dot, it is hidden by default on most systems.
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