Update app.py

app.py

@@ -184,8 +184,18 @@ def file_Upload():
         print("All chunk List END ***********************\n\n")
         
         #embeddings = OpenAIEmbeddings()
-        from langchain.embeddings.sentence_transformer import SentenceTransformerEmbeddings
-        embeddings = SentenceTransformerEmbeddings(model_name="all-MiniLM-L6-v2")
+        #from langchain.embeddings.sentence_transformer import SentenceTransformerEmbeddings
+        #embeddings = SentenceTransformerEmbeddings(model_name="all-MiniLM-L6-v2")
+        from langchain.embeddings import HuggingFaceEmbeddings
+
+        model_name = "sentence-transformers/all-MiniLM-L6-v2"
+        model_kwargs = {'device': 'cpu'}
+        encode_kwargs = {'normalize_embeddings': False}
+        embeddings = HuggingFaceEmbeddings(
+            model_name=model_name,
+            model_kwargs=model_kwargs,
+            encode_kwargs=encode_kwargs
+        )
         global vectordb
         #vectordb = Chroma.from_documents(texts,embeddings)
         vectordb=Chroma.from_documents(documents=texts, embedding=embeddings, collection_metadata={"hnsw:space": "cosine"})