ch
spec:
  hosts:
  - &#34;*&#34;
  gateways:
  - bookinfo-gateway
  http:
  - match:
    - uri:
        regex: &#34;[A-Z&#34;
    route:
    - destination:
        host: productpage
</code></pre><p>In this example, the regex <code>[A-Z</code> does not follow the RE2 syntax.</p></article><nav class=pagenav><div class=left><a title href=/v1.16/docs/reference/config/analysis/ist0144/ class=next-link><svg class="icon left-arrow"><use xlink:href="/v1.16/img/icons.svg#left-arrow"/></svg>InvalidApplicationUID</a>