### Describe the problem you discovered

I don't when exactly, but when i tested aeWallet v3, i found this in the terminal

```
504 Gateway Time-out

504 Gateway Time-out

---

nginx/1.22.0 (Ubuntu)


```

### Describe the solution you'd like

_No response_

### Epic

_No response_

Start by reproducing the aeWallet v3 request against testnet.archethic.net and capture the terminal request that returns the shown nginx/1.22.0 504 response. Inspect the relevant gateway and node logs to identify which request times out; done means the request completes successfully and the regression is covered by a reproducible check.

Written by the indexing model from the issue text.