# Database Errors

## `Database.InvalidDesignatorError`

Thrown when an account's delegation designator is malformed.

**Source:** [src/evm/Database.ts](https://github.com/wevm/ox/blob/main/src/evm/Database.ts#L204)

## `Database.MissingBlockHashError`

Thrown when a `BLOCKHASH` the chain retains was never seeded.

**Source:** [src/evm/Database.ts](https://github.com/wevm/ox/blob/main/src/evm/Database.ts#L219)