Merge pull request #6853 from blockscout/fix-503-page

Fix 503 page

CHANGELOG.md

@@ -28,6 +28,7 @@
 
 ### Chore
 
+- [#6853](https://github.com/blockscout/blockscout/pull/6853) - Fix 503 page
 - [#6845](https://github.com/blockscout/blockscout/pull/6845) - Extract Docker-compose services into separate files
 - [#6834](https://github.com/blockscout/blockscout/pull/6834) - Take into account FIRST_BLOCK in "Total blocks" counter on the main page
 - [#6340](https://github.com/blockscout/blockscout/pull/6340) - Rollback to websocket_client 1.3.0

apps/block_scout_web/assets/static/503.html

@@ -187,6 +187,7 @@
                     </div>
                     <div class="block-not-found-content">
                         <h1 class="card-title error-title">Service unavailable</h1>
+                        <h2>::CLOUDFLARE_ERROR_500S_BOX::</h2>
                         <p class="error-descr">Hang on… we’re working on a fix! Please come back soon to try again.</p>
                         <a class="error-btn" href="/">Back to home</a>
                     </div>