---
title: S3 Issues Troubleshooting
description: FastGPT Self-Hosting Common S3 Issues Troubleshooting
---

## 1. Log shows ERR level "Failed to ensure external public/private bucket exists", resulting in inability to connect to object storage

### 1.1 Error Stack Display
- error: Error: getaddrinfo ENOTFOUND

Example
- ![](/imgs/faq4.png)

### Possible Errors
- STORAGE_S3_FORCE_PATH_STYLE configuration error

### Solution
- Turn on the STORAGE_S3_FORCE_PATH_STYLE option to `true`, otherwise the client cannot find the target service

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## 2. Upload conversation file / knowledge base file error

Example
- ![](/imgs/faq5.png)

### 2.1 SignatureDoesNotMatched
- Signature inconsistency, mostly due to Nginx configuration error

### Possible Errors
- Necessary request headers (such as Headers, Host) were not passed during Nginx forwarding

### Solution
- Configure proxy_set_header Host $http_host, do not set to $host, Nginx's $host built-in variable will remove the port, set to $http_host

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