<p>You are probably using a wrong aggregator endpoint. In order to make the restoration work, please use the following endpoints:</p>
<ul>
<li>Cardano <code>preprod</code> network: <a href="https://aggregator.release-preprod.api.mithril.network/aggregator" rel="nofollow noreferrer">https://aggregator.release-preprod.api.mithril.network/aggregator</a></li>
<li>Cardano <code>preview</code> network: <a href="https://aggregator.pre-release-preview.api.mithril.network/aggregator" rel="nofollow noreferrer">https://aggregator.pre-release-preview.api.mithril.network/aggregator</a></li>
</ul>
<p>The Mithril networks configurations are also available in our documentation website at <a href="https://mithril.network/doc/manual/developer-docs/references#mithril-networks" rel="nofollow noreferrer">https://mithril.network/doc/manual/developer-docs/references#mithril-networks</a></p>

CC BY-SA 4.0
2022-11-14T09:17:34.543Z
2022-11-14T09:17:34.543Z
jpraynaud
<p>I'm trying to bootstrap a Cardano node on <code>preview</code> network by using Mithril follow this instruction:</p>
<p><a href="https://mithril.network/doc/manual/getting-started/bootstrap-cardano-node/" rel="nofollow noreferrer">https://mithril.network/doc/manual/getting-started/bootstrap-cardano-node/</a></p>
<p>In step &quot;Restore Selected Snapshot&quot;, I had a problem after downloading <code>c9839be0355587c4a9a3bcff4a5285001b12e2f2b7ea3ac38bb2dc1ab25d3baf</code> snapshot.
<a href="https://i.sstatic.net/0NwW5.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/0NwW5.png" alt="enter image description here" /></a></p>
<p>Then I used all snapshots are listed but it still had encountered the above error.</p>
<p>Please let me know how can I fix it?</p>

<cardano-node><error>
Error when unpacking snapshot to bootstrap Cardano node by using Mithril
# Error when unpacking snapshot to bootstrap Cardano node by using Mithril

(Asked by: username_0 on 2022-11-14)

I'm trying to bootstrap a Cardano node on `preview` network by using Mithril follow this instruction:

<https://mithril.network/doc/manual/getting-started/bootstrap-cardano-node/>

In step "Restore Selected Snapshot", I had a problem after downloading `c9839be0355587c4a9a3bcff4a5285001b12e2f2b7ea3ac38bb2dc1ab25d3baf` snapshot.
[![enter image description here](https://i.sstatic.net/0NwW5.png)](https://i.sstatic.net/0NwW5.png)

Then I used all snapshots are listed but it still had encountered the above error.

Please let me know how can I fix it?

**Tags:** cardano-node, error

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## 1 answers

### Answer by username_1 on 2022-11-14. Score: 1 | Accepted answer

You are probably using a wrong aggregator endpoint. In order to make the restoration work, please use the following endpoints:

* Cardano `preprod` network: <https://aggregator.release-preprod.api.mithril.network/aggregator>
* Cardano `preview` network: <https://aggregator.pre-release-preview.api.mithril.network/aggregator>

The Mithril networks configurations are also available in our documentation website at <https://mithril.network/doc/manual/developer-docs/references#mithril-networks>


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