Wallet could not send the TX
The reason for this error is commonly that your wallet’s mempool is full. Try staking in one hour and then every hour thereafter.
When using Eternl with the VyFi App for the first time some users may receive this error. Sending a small amount of ADA to the wallet generates a UTXO and may clear this error.
An error some users face is having a high volume of NFTs in their wallet. Staking from a wallet with less NFTs may clear the error.