replace file_path with index_path for faiss index

app.py

@@ -138,8 +138,9 @@ import os
 import pickle
 def get_faiss_semantic_index():
     try:
+        index_path = "./HuggingFaceEmbeddings.pkl"
         # Load embeddings from the pickle file
-        with open(file_path, "rb") as f:
+        with open(index_path, "rb") as f:
             faiss_index = pickle.load(f)
         st.write("Embeddings loaded successfully.")
         return faiss_index