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+---
+'@backstage/plugin-auth-node': minor
+---
+
+Fixed a potential issue when using the Backstage's `PassportOAuthAuthenticatorHelper` to implement a custom OAuth Authenticator. The issue occurs during the start stage of the authorization process when the custom `passport.Strategy` calls the `error()` to propagate an error message. Because the `error` function wasn't being set Backstage would throw a `this.error is not a function` error thus hiding the original cause.