# Troubleshooting

Open [Vozilla GCS](/gcs-software/vozilla-gcs.md) > [System](/gcs-software/vozilla-gcs/system.md) and ensure that the device URL matches your device

<figure><img src="/files/Q9iLWkOHSnwUfAfX8wWU" alt=""><figcaption></figcaption></figure>

You will see VPS Service Failed and the following error.&#x20;

<figure><img src="/files/JSudqm37VxX17MnymLa9" alt=""><figcaption><p>This error indicates a map error</p></figcaption></figure>

We need to upload and select a map[Selecting a map](/gcs-software/vozilla-gcs/maps/selecting-a-map.md)

Restart the VPS&#x20;

You'll see active and VNS-SDK Initialized in the logs.

The service will time out without a MAVLink connection

<figure><img src="/files/a4Mynbvi8doRISVkTa3Q" alt=""><figcaption></figcaption></figure>

I plug in all the devices on my desk to confirm&#x20;

<figure><img src="/files/ipq3wRzxEfYM0JMyFDgk" alt=""><figcaption></figcaption></figure>

View after restarting the VPS and viewing a camera snapshot

<figure><img src="/files/ERA6fbEjzdez0d43apGj" alt=""><figcaption></figcaption></figure>

#### Connecting to the MAV network

<figure><img src="/files/XP6g7aYNP8l7TlxgONBv" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/fSWB4QuNpSv2rdvhtTr0" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/b4f6VPcQdqdLDey1I65X" alt=""><figcaption></figcaption></figure>

#### Debug mavproxy issues

To check mavproxy

```bash
sudo systemctl status mavproxy
```

<figure><img src="/files/3RYW0aXAbyhGBu7PAtlL" alt=""><figcaption></figcaption></figure>

If you see data like this on your mavproxy terminal, check your serial connection wiring

{% embed url="<https://discuss.ardupilot.org/t/garbage-noise-characters-being-generated-over-direct-serial-connection/46371>" %}

{% embed url="<https://discuss.ardupilot.org/t/mavproxy-issue-non-readable-message-after-connexion/45704>" %}


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