added check for non existing path in tmp file creation

word2vec.py

@@ -254,8 +254,14 @@ def store_df_in_temp_file(df):
     '''
         Store the dataframe in a temporary file
     '''
+    # Define directory for temporary files
+    temp_dir = "./downloads/nn"
+    
+    # Create the directory if it doesn't exist
+    os.makedirs(temp_dir, exist_ok=True)
+
     # Create random tmp file name
-    _, temp_file_path = tempfile.mkstemp(prefix="temp_", suffix=".xlsx", dir="./downloads/nn")
+    _, temp_file_path = tempfile.mkstemp(prefix="temp_", suffix=".xlsx", dir=temp_dir)
 
     # Write data to the temporary file
     with pd.ExcelWriter(temp_file_path, engine='xlsxwriter') as writer: