Account creation via faucet fails with "unknown error"

Account creation via the official BitShares faucet fails consistently with an "unknown error".
This happens for multiple users and appears to be a backend / faucet issue, not a client-side problem.

### Environment
- Faucet URL: https://faucet.bitshares.eu/onboarding
- Browser: Chrome (also tested Firefox)
- OS: Windows 10
- VPN/Proxy: No
- Region: Europe
- Account name format: valid (lowercase, with hyphen)
- Public key: valid BTS public key

### Steps to Reproduce
1. Open https://faucet.bitshares.eu/onboarding
2. Enter a valid account name
3. Generate or paste a valid BTS public key
4. Submit the registration form

### Expected Result
Account is successfully created and recorded on-chain.

### Actual Result
Registration fails with a generic "unknown error".
No transaction is broadcasted to the blockchain.
No detailed error message is shown.

### Additional Notes
- Issue persists across different browsers and devices.
- VPN and adblockers are disabled.
- Same error occurs regardless of account name.
- Blockchain itself appears operational (blocks are being produced).
- No recent `account_create_operation` events observed on-chain.
Account creation via the official BitShares faucet fails consistently with an "unknown error".
This happens for multiple users and appears to be a backend / faucet issue, not a client-side problem.

### Environment
- Faucet URL: https://faucet.bitshares.eu/onboarding
- Browser: Chrome (also tested Firefox)
- OS: Windows 11
- VPN/Proxy: No
- Region: Europe
- Account name format: valid (lowercase, with hyphen)
- Public key: valid BTS public key

### Steps to Reproduce
1. Open https://faucet.bitshares.eu/onboarding
2. Enter a valid account name
3. Generate or paste a valid BTS public key
4. Submit the registration form

### Expected Result
Account is successfully created and recorded on-chain.

### Actual Result
Registration fails with a generic "unknown error".
No transaction is broadcasted to the blockchain.
No detailed error message is shown.

### Additional Notes
- Issue persists across different browsers and devices.
- VPN and adblockers are disabled.
- Same error occurs regardless of account name.
- Blockchain itself appears operational (blocks are being produced).
- No recent `account_create_operation` events observed on-chain.
This suggests the faucet backend or onboarding service is currently unavailable or misconfigured.


Start at https://faucet.bitshares.eu/onboarding and reproduce the failure with a valid account name and BTS public key, then trace the registration request to determine where the generic error originates. Done means account creation succeeds with an on-chain transaction, or the failure exposes a specific actionable error.

Written by the indexing model from the issue text.