update error messages

organize.py

@@ -46,7 +46,7 @@ def organize_files(drive):
     elif operating_system == 'Windows':  # Windows
         drive = drive + '\\'
         if not os.path.exists(drive):
-            print("ERROR! Invalid location")
+            print(f"ERROR! {drive} is not a valid location")
             return
         files = os.listdir(drive)
         extns = {os.path.splitext(file)[1].strip('.') for file in files}