Update app.py

app.py

@@ -7,7 +7,6 @@ def process_ebook(ebook_file):
     # Ensure input_files folder exists
     input_dir = "input_files"
     os.makedirs(input_dir, exist_ok=True)
-    
     # Save the uploaded file to the input_files folder
     ebook_file_path = os.path.join(input_dir, ebook_file.name)
     
@@ -20,7 +19,12 @@ def process_ebook(ebook_file):
     input_files_str = "\n".join(input_files_list)
     
     # Print the list of input files in the terminal
-    print("Files in input_files folder:", input_files_str)
+    print("Files in input_files folder:[", input_files_str "]")
+    
+    if not os.listdir("input_files"):
+        raise FileNotFoundError("The folder 'input_files' is empty.")
+
+
 
     # Call the Auto_VoxNovel.py script and stream its output live
     try: