dd>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</a></code> - if the login mechanism attempted to modify the response and it was already committed</dd>
<dd><code><a href="../../../jakarta/servlet/ServletException.html" title="class in jakarta.servlet">ServletException</a></code> - if the authentication failed and the caller is responsible for handling the error (i.e., the
 und