Fix

homeassistant/components/overseerr/coordinator.py

@@ -42,5 +42,9 @@
         """Fetch data from API endpoint."""
         try:
             return await self.client.get_request_count()
         except OverseerrConnectionError as err:
-            raise UpdateFailed(f"Error communicating with API: {err}") from err
+            raise UpdateFailed(
+                translation_domain=DOMAIN,
+                translation_key="connection_error",
+                translation_placeholders={"error": str(err)},
+            ) from err

homeassistant/components/overseerr/quality_scale.yaml

@@ -74,7 +74,7 @@ rules:
   entity-device-class: todo
   entity-disabled-by-default: todo
   entity-translations: done
-  exception-translations: todo
+  exception-translations: done
   icon-translations: todo
   reconfiguration-flow: todo
   repair-issues:

homeassistant/components/overseerr/strings.json

@@ -44,5 +44,10 @@
         "name": "Available requests"
       }
     }
+  },
+  "exceptions": {
+    "connection_error": {
+      "message": "Error connecting to the Overseerr instance: {error}"
+    }
   }
 }