le>Example</h2><p>You will receive this message:</p><pre><code class=language-plain data-expandlinks=true data-repo=istio>Warning [IST0122] (VirtualService bad-match.default) Field &#34;uri&#34; regular expression invalid: &#34;[A-Z&#34; (error parsing regexp: missing closing ]: `[A-Z`)
</code></pre><p>when your cluster has following virtual service:</p><pre><code class=language-yaml data-expandlinks=true data-repo=istio>apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: bad-mat