# Class BSV::Wallet::ConfigurationError <a id="class-BSV-Wallet-ConfigurationError"></a>

**Inherits:** `Error`

Raised at boot when a configuration value is not recognised — e.g. an unknown
`trust_model` (a mistyped `BSV_WALLET_TRUST_MODEL`). A config mistake fails
loud at boot rather than silently selecting a weaker default (#335; Copilot
review on #488).