Solana NFT Minting fails with Phantom Wallet: 'Failed to simulate the results of this request

I'm trying to mint an NFT using Candy Machine UI v3 on the Solana network, but I'm encountering errors when attempting to confirm the transaction in Phantom Wallet. Here are the details:

Environment:

• Network: Solana devnet
• Wallet: Phantom
• UI: Candy Machine UI v3
• RPC: Helius Devnet RPC

Error messages:

1. "Failed to simulate the results of this request. Confirming is unsafe and may lead to losses."
2. "There was a problem estimating the fee for this transaction. It may fail."
3. "Couldn't fetch network fee"

My .env configuration:

REACT_APP_CANDY_MACHINE_ID=<my id>REACT_APP_SOLANA_NETWORK=devnetREACT_APP_SOLANA_RPC_HOST=https://devnet.helius-rpc.com/?api-key=<my key>SKIP_PREFLIGHT_CHECK=true

I've tried the following:

• Ensuring I have sufficient SOL in my wallet (devnet mode)
• Checking the Candy Machine configuration
• Verifying the RPC endpoint is working

What could be causing these errors, and how can I resolve them to successfully mint my NFT?

Any insights or troubleshooting steps would be greatly appreciated.

Here is the picture of my Wallet when i click Mint button: