# How can I verify that my test node is operating correctly? Why am I unable to call contracts after connecting my wallet?

**URL:** <https://forum.fuel.network/t/how-can-i-verify-that-my-test-node-is-operating-correctly-why-am-i-unable-to-call-contracts-after-connecting-my-wallet/4787>\
**Category:** Fuel Network\
**Tags:** testnet\
**Created:** [March 13, 2024, 10:30am UTC](https://forum.fuel.network/t/how-can-i-verify-that-my-test-node-is-operating-correctly-why-am-i-unable-to-call-contracts-after-connecting-my-wallet/4787 "2024-03-13T10:30:19Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![luz33c](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/luz33c/32/2511_2.png) [@luz33c](https://forum.fuel.network/u/luz33c)\
**Post date:** [March 13, 2024, 10:30am UTC](https://forum.fuel.network/t/how-can-i-verify-that-my-test-node-is-operating-correctly-why-am-i-unable-to-call-contracts-after-connecting-my-wallet/4787/1 "2024-03-13T10:30:19Z")

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I’ve performed a health check using GraphQL, and it seems to be normal.

```auto
{
  "data": {
    "health": true
  }
}

```

However, I want to confirm how long it takes for the block synchronization. It has been 2 hours since I completed the setup. Currently, when I query for the latest block height, it shows:

```auto
{
  "data": {
    "blocks": {
      "nodes": [
        {
          "id": "0xb1807ca9f2eec7e459b866ecf69b68679fc6b205a9a85c16bd4943d1bfc6fb2a",
          "transactions": []
        }
      ]
    }
  }
}

```

PS：  
I tried to call a contract I wrote using the Fuel wallet, but GraphQL threw an error and did not return any response.

---

<div class="post-metadata">

**Author:** ![crypt0mate](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/crypt0mate/32/2445_2.png) [@crypt0mate](https://forum.fuel.network/u/crypt0mate)\
**Post date:** [March 14, 2024, 8:09am UTC](https://forum.fuel.network/t/how-can-i-verify-that-my-test-node-is-operating-correctly-why-am-i-unable-to-call-contracts-after-connecting-my-wallet/4787/2 "2024-03-14T08:09:37Z")

</div>

@luz33c perhaps share the error you mention was raised by GraphQL