From 1063b11ef6ac96d150d3479dff357eae31f7ae35 Mon Sep 17 00:00:00 2001
From: Soulter <905617992@qq.com>
Date: Fri, 4 Jul 2025 10:19:58 +0800
Subject: [PATCH] fix: check provider availability errors on dify

---
 astrbot/core/provider/sources/dify_source.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/astrbot/core/provider/sources/dify_source.py b/astrbot/core/provider/sources/dify_source.py
index cc3e8062e..e6f345741 100644
--- a/astrbot/core/provider/sources/dify_source.py
+++ b/astrbot/core/provider/sources/dify_source.py
@@ -67,7 +67,7 @@ class ProviderDify(Provider):
         if image_urls is None:
             image_urls = []
         result = ""
-        session_id = session_id or kwargs.get("user")  # 1734
+        session_id = session_id or kwargs.get("user") or "unknown"  # 1734
         conversation_id = self.conversation_ids.get(session_id, "")
 
         files_payload = []