puppeteer/website/versioned_docs/version-21.5.2/api/puppeteer.protocolerror.md

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---
sidebar_label: ProtocolError
---
# ProtocolError class
ProtocolError is emitted whenever there is an error from the protocol.
#### Signature:
```typescript
export declare class ProtocolError extends CustomError
```
**Extends:** [CustomError](./puppeteer.customerror.md)
## Properties
| Property | Modifiers | Type | Description |
| --------------- | --------------------- | ------------------- | ----------- |
| code | <code>readonly</code> | number \| undefined | |
| originalMessage | <code>readonly</code> | string | |