Fix Slack type error for file upload (#101720)

Fix regression
2023-10-09 23:35:29 -04:00 · 2023-10-09 23:35:29 -04:00 · e5d5440385
commit e5d5440385
parent db3a4dec33
1 changed files with 1 additions and 1 deletions
--- a/homeassistant/components/slack/notify.py
+++ b/homeassistant/components/slack/notify.py
@ -166,7 +166,7 @@ class SlackNotificationService(BaseNotificationService):
                filename=filename,
                initial_comment=message,
                title=title or filename,
-                thread_ts=thread_ts,
+                thread_ts=thread_ts or "",
            )
        except (SlackApiError, ClientError) as err:
            _LOGGER.error("Error while uploading file-based message: %r", err)