Merge pull request #13273 from spammenotinoz/dev

**FIX** Update Knowledge ReIndexing to continue upon missing\corrupt collections

backend/open_webui/routers/knowledge.py

@@ -178,10 +178,26 @@ async def reindex_knowledge_files(request: Request, user=Depends(get_verified_us
 
     log.info(f"Starting reindexing for {len(knowledge_bases)} knowledge bases")
 
+    deleted_knowledge_bases = []
+
     for knowledge_base in knowledge_bases:
-        try:
-            files = Files.get_files_by_ids(knowledge_base.data.get("file_ids", []))
+        # -- Robust error handling for missing or invalid data
+        if not knowledge_base.data or not isinstance(knowledge_base.data, dict):
+            log.warning(
+                f"Knowledge base {knowledge_base.id} has no data or invalid data ({knowledge_base.data!r}). Deleting."
+            )
+            try:
+                Knowledges.delete_knowledge_by_id(id=knowledge_base.id)
+                deleted_knowledge_bases.append(knowledge_base.id)
+            except Exception as e:
+                log.error(
+                    f"Failed to delete invalid knowledge base {knowledge_base.id}: {e}"
+                )
+            continue
 
+        try:
+            file_ids = knowledge_base.data.get("file_ids", [])
+            files = Files.get_files_by_ids(file_ids)
             try:
                 if VECTOR_DB_CLIENT.has_collection(collection_name=knowledge_base.id):
                     VECTOR_DB_CLIENT.delete_collection(
@@ -189,10 +205,7 @@ async def reindex_knowledge_files(request: Request, user=Depends(get_verified_us
                     )
             except Exception as e:
                 log.error(f"Error deleting collection {knowledge_base.id}: {str(e)}")
-                raise HTTPException(
-                    status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
-                    detail=f"Error deleting vector DB collection",
-                )
+                continue  # Skip, don't raise
 
             failed_files = []
             for file in files:
@@ -213,10 +226,8 @@ async def reindex_knowledge_files(request: Request, user=Depends(get_verified_us
 
         except Exception as e:
             log.error(f"Error processing knowledge base {knowledge_base.id}: {str(e)}")
-            raise HTTPException(
-                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
-                detail=f"Error processing knowledge base",
-            )
+            # Don't raise, just continue
+            continue
 
         if failed_files:
             log.warning(
@@ -225,7 +236,9 @@ async def reindex_knowledge_files(request: Request, user=Depends(get_verified_us
             for failed in failed_files:
                 log.warning(f"File ID: {failed['file_id']}, Error: {failed['error']}")
 
-    log.info("Reindexing completed successfully")
+    log.info(
+        f"Reindexing completed. Deleted {len(deleted_knowledge_bases)} invalid knowledge bases: {deleted_knowledge_bases}"
+    )
     return True