ple</a>).</p></li><li><p>Verify Prometheus handler config exists.</p><p>In Kubernetes environments, issue the following command:</p><pre><code class="language-bash">kubectl get prometheuses.config.istio.io --all-namespaces
</code></pre><p>The expected output is:</p><pre><code>NAMESPACE      NAME           KIND
istio-system   handler        prometheus.v1alpha2.config.istio.io
</code></pre><p>If there are no prometheus handlers configured, you will need to reconfigure Mixer with the appropriate handler config