microsoft/playwright · error · ProtocolError

closed

closed

Error message

Target page, context or browser has been closed

What it means

Error "Target page, context or browser has been closed" thrown in microsoft/playwright.

Source

Thrown at packages/playwright-core/src/server/webkit/webview/wvConnection.ts:108

  private _disposed = false;
  private readonly _rawSend: (message: any) => void;
  private readonly _callbacks = new Map<number, { resolve: (o: any) => void, reject: (e: ProtocolError) => void, error: ProtocolError }>();
  private _crashed: boolean = false;

  constructor(connection: WVConnection, sessionId: string, rawSend: (message: any) => void) {
    super();
    this.setMaxListeners(0);
    this.connection = connection;
    this.sessionId = sessionId;
    this._rawSend = rawSend;
  }

  async send<T extends keyof Protocol.CommandParameters>(
    method: T,
    params?: Protocol.CommandParameters[T]
  ): Promise<Protocol.CommandReturnValues[T]> {
    if (this._crashed || this._disposed || this.connection._browserDisconnectedLogs)
      throw new ProtocolError(this._crashed ? 'crashed' : 'closed', undefined, this.connection._browserDisconnectedLogs);
    const id = this.connection.nextMessageId();
    const messageObj = { id, method, params };
    this._rawSend(messageObj);
    return new Promise<Protocol.CommandReturnValues[T]>((resolve, reject) => {
      this._callbacks.set(id, { resolve, reject, error: new ProtocolError('error', method) });
    });
  }

  sendMayFail<T extends keyof Protocol.CommandParameters>(method: T, params?: Protocol.CommandParameters[T]): Promise<Protocol.CommandReturnValues[T] | void> {
    return this.send(method, params).catch(error => debugLogger.log('error', error));
  }

  markAsCrashed() {
    this._crashed = true;
  }

  isDisposed(): boolean {
    return this._disposed;

View on GitHub (pinned to c8fc3bf8d3)

When it happens

Trigger: Thrown at packages/playwright-core/src/server/webkit/webview/wvConnection.ts:108 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of microsoft/playwright@c8fc3bf8d3 (2026-08-12). Data as JSON: /api/errors/eccf5452dbe9daea. Report an issue: GitHub.