| Already Pending | MetaMask Crypto Wallet Error Code Already Pending: How to Fix It | low | Easy |
| Could Not Decrypt Vault | MetaMask Crypto Wallet Error Code Could Not Decrypt Vault: How to Fix It | high | Medium |
| Failed to Fetch | MetaMask Error Code Failed to Fetch: How to Fix It | medium | Easy |
| Insufficient Funds for Gas | MetaMask Crypto Wallet Error Code Insufficient Funds for Gas: How to Fix It | medium | Easy |
| Internal JSON-RPC Error | MetaMask Internal JSON-RPC Error: How to Fix It | medium | Easy |
| Network Error | MetaMask Crypto Wallet Network Error: How to Fix It | medium | Easy |
| Nonce Too Low | MetaMask Crypto Wallet Error Code Nonce Too Low: How to Fix It | medium | Easy |
| RPC Error: Header Not Found | MetaMask Crypto Wallet RPC Error: Header Not Found - How to Fix It | medium | Easy |
| Replacement Transaction Underpriced | MetaMask Error Code Replacement Transaction Underpriced: How to Fix It | low | Easy |
| Transaction May Fail | MetaMask Crypto Wallet Error Code Transaction May Fail: How to Fix It | medium | Easy |
| Transaction Underpriced | MetaMask Crypto Wallet Transaction Underpriced Error: How to Fix It | low | Easy |
| User Denied Transaction Signature | MetaMask Crypto Wallet Error Code User Denied Transaction Signature: How to Fix It | low | Easy |