Issue #2906376 by zenimagine: The "Conversations" tab does not work

CHANGELOG.md

 8.x-1.0-alpha2
 Hide private messages tab
 Disable to field in message
+
+8.x-1.0-alpha3
+Fix user page problem on install: https://www.drupal.org/node/2906376#comment-12245045
\ No newline at end of file

message_thread.module

@@ -17,6 +17,16 @@ use Drupal\message\Entity\MessageTemplate;
 use Drupal\user\Entity\User;
 use Drupal\Core\Access\AccessResult;
 
+
+/**
+ * Implements hook_installed.
+ * Flush cache after install to ensure that all routes are read
+ */
+function message_thread_modules_installed() {
+  drupal_flush_all_caches();
+}
+
+
 /**
  * Implements hook_help().
  */