diff --git a/backend/open_webui/apps/webui/routers/knowledge.py b/backend/open_webui/apps/webui/routers/knowledge.py
index 1628bb382..203ec95c7 100644
--- a/backend/open_webui/apps/webui/routers/knowledge.py
+++ b/backend/open_webui/apps/webui/routers/knowledge.py
@@ -159,10 +159,7 @@ def add_file_to_knowledge_by_id(
     try:
         process_file(ProcessFileForm(file_id=form_data.file_id, collection_name=id))
     except Exception as e:
-        raise HTTPException(
-            status_code=status.HTTP_400_BAD_REQUEST,
-            detail=str(e),
-        )
+        log.debug(e)
 
     if knowledge:
         data = knowledge.data or {}