diff --git a/core/api/google/google.model.js b/core/api/google/google.model.js
index 83d4cbf..e03ff61 100644
--- a/core/api/google/google.model.js
+++ b/core/api/google/google.model.js
@@ -177,7 +177,7 @@ module.exports = function GoogleHomeModel(logger, db, redisClient, jwtService) {
         });
       } catch (e) {
         const status = get(e, 'response.status');
-        logger.error(`GOOGLE_HOME_REPORT_STATE_ERROR, user = ${users[0].id}, status = ${status}`);
+        logger.debug(`GOOGLE_HOME_REPORT_STATE_ERROR, user = ${users[0].id}, status = ${status}`);
         if (status !== 404) {
           logger.info(get(e, 'response.data'));
           logger.info(payloadCleaned);
diff --git a/core/api/instance/instance.model.js b/core/api/instance/instance.model.js
index 3a57663..ad1cbd2 100644
--- a/core/api/instance/instance.model.js
+++ b/core/api/instance/instance.model.js
@@ -124,7 +124,7 @@ module.exports = function InstanceModel(logger, db, redisClient, jwtService, fin
 
     // the instance doesn't exist or has been deleted
     if (instanceInDb === null) {
-      throw new ForbiddenError();
+      throw new ForbiddenError(`Instance ${instance.id} doesn't exist or has been deleted.`);
     }
 
     const accessToken = jwtService.generateAccessTokenInstance(instanceInDb);