Failed to backup data: no data downloaded
#RC#

Verify

The complexity of modern smart contracts means even a tiny data mismatch can cause a revert. A frequent issue for app-monorepo users involves a conflict between multiple active extensions. The best approach is to wait for the network’s base fee to drop before re-trying the call.

Before you sign the transaction, double-check that your hardware wallet is active and ready. A mismatch in the chain ID settings will prevent app-monorepo from syncing with the blockchain. The official project documentation is the best place to find detailed troubleshooting steps.

The error message you see is often a high-level summary of a more complex internal revert. Make sure you are not trying to execute a trade with no liquidity. Layer 2 network delays can sometimes lead to “ghost” transactions that appear later.