diff --git a/webhook_server_container/libs/github_api.py b/webhook_server_container/libs/github_api.py
index 4b53d5d0..ff20917b 100644
--- a/webhook_server_container/libs/github_api.py
+++ b/webhook_server_container/libs/github_api.py
@@ -592,7 +592,8 @@ def assign_reviewers(self) -> None:
                 try:
                     self.pull_request.create_review_request([reviewer])
                 except GithubException as ex:
-                    LOGGER.error(f"{self.log_prefix} Failed to add reviewer {reviewer}. {ex}")
+                    LOGGER.warning(f"{self.log_prefix} Failed to add reviewer {reviewer}. {ex}")
+                    self.pull_request.create_issue_comment(f"{reviewer} can not be added as reviewer. {ex}")
 
     def add_size_label(self) -> None:
         size: int = self.pull_request.additions + self.pull_request.deletions