> For the complete documentation index, see [llms.txt](https://niftix.gitbook.io/niftix-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://niftix.gitbook.io/niftix-docs/safety/troubleshooting.md).

# Troubleshooting

## “Failed to fetch” / account info errors

Usually the app cannot reach Solana RPC (backend proxy or network).

* Confirm the API server is running.
* Hard-refresh the app.
* Check you are not blocked by an ad-blocker / VPN on `localhost` or your API host.

## Empty NFT grid after switching networks

Set both:

* Wallet network (Phantom)
* App cluster (`NEXT_PUBLIC_SOLANA_NETWORK` / backend `SOLANA_NETWORK`)

Restart frontend and backend after env changes.

## Stuck on “Accepting & Depositing…”

The wallet tx may have already landed. Check Solana Explorer with the signature from Phantom, then refresh the swap page. Backend status can lag briefly behind the chain.

## Create offer rejected for duplicate assets

* Same NFT/token mint on both sides → not allowed.
* Two SOL lines on the **same** side → not allowed.
* SOL on both sides with different amounts → allowed.

## Private offer won’t create

* Receiver address invalid
* Receiver equals your own wallet
* Missing receiver for private visibility

## Still stuck?

Email `support@niftix.app` with:

* Swap link or on-chain id
* Wallet address (public)
* Cluster (devnet / mainnet)
* Transaction signature if any
* Screenshot of the error (no seed phrases)


---

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