debug/chat: increase notify error duration to 3000 (#2778)

api/README.md

 1. Start the docker-compose stack
 
    The backend require some middleware, including PostgreSQL, Redis, and Weaviate, which can be started together using `docker-compose`.
-   
+
    ```bash
    cd ../docker
    docker-compose -f docker-compose.middleware.yaml -p dify up -d
 3. Generate a `SECRET_KEY` in the `.env` file.
 
    ```bash
-   openssl rand -base64 42
+   sed -i "/^SECRET_KEY=/c\SECRET_KEY=$(openssl rand -base64 42)" .env
    ```
 3.5 If you use annaconda, create a new environment and activate it
    ```bash
    ```
    pip install -r requirements.txt --upgrade --force-reinstall
    ```
-   
+
 6. Start backend:
    ```bash
    flask run --host 0.0.0.0 --port=5001 --debug

web/app/components/app/configuration/debug/index.tsx

 
   const { notify } = useContext(ToastContext)
   const logError = useCallback((message: string) => {
-    notify({ type: 'error', message })
+    notify({ type: 'error', message, duration: 3000 })
   }, [notify])
   const [completionFiles, setCompletionFiles] = useState<VisionFile[]>([])