chore: bump mypy to 1.16 (#20608)

api/core/rag/embedding/cached_embedding.py

@@ -139,4 +139,4 @@ class CacheEmbedding(Embeddings):
                 logging.exception(f"Failed to add embedding to redis for the text '{text[:10]}...({len(text)} chars)'")
             raise ex
 
-        return embedding_results
+        return embedding_results  # type: ignore

api/core/rag/index_processor/processor/qa_index_processor.py

@@ -104,7 +104,7 @@ class QAIndexProcessor(BaseIndexProcessor):
 
     def format_by_template(self, file: FileStorage, **kwargs) -> list[Document]:
         # check file type
-        if not file.filename.endswith(".csv"):
+        if not file.filename or not file.filename.endswith(".csv"):
             raise ValueError("Invalid file type. Only CSV files are allowed")
 
         try: