Saved reports (templates) are now just called "reports".

modules/opencase_reporting/src/Entity/OpenCaseReportInterface.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace Drupal\opencase_reporting\Entity;
+
+use Drupal\Core\Config\Entity\ConfigEntityInterface;
+
+/**
+ * Provides an interface for defining OpenCase Report entities.
+ */
+interface OpenCaseReportInterface extends ConfigEntityInterface {
+
+  // Add get/set methods for your configuration properties here.
+}