saving file error```
I'm sorry, but an uncaught exception occurred.
While running game code:
File "game/Chapter3.rpy", line 11062, in script
menu:
File "renpy/common/00action_file.rpy", line 372, in __call__
renpy.save(fn, extra_info=save_name)
Exception: Not saved - no valid save locations.
-- Full Traceback ------------------------------------------------------------
Full traceback:
File "game/Chapter3.rpy", line 11062, in script
menu:
File "renpy/ast.py", line 1642, in execute
choice = renpy.exports.menu(choices, self.set, args, kwargs, item_arguments)
File "renpy/exports.py", line 1038, in menu
rv = renpy.store.menu(new_items)
File "renpy/exports.py", line 1274, in display_menu
rv = renpy.ui.interact(mouse='menu', type=type, roll_forward=roll_forward)
File "renpy/ui.py", line 298, in interact
rv = renpy.game.interface.interact(roll_forward=roll_forward, **kwargs)
File "renpy/display/core.py", line 3101, in interact
repeat, rv = self.interact_core(preloads=preloads, trans_pause=trans_pause, pause=pause, pause_start=pause_start, **kwargs)
File "renpy/display/core.py", line 3910, in interact_core
rv = root_widget.event(ev, x, y, 0)
File "renpy/display/layout.py", line 1053, in event
rv = i.event(ev, x - xo, y - yo, cst)
File "renpy/display/layout.py", line 1053, in event
rv = i.event(ev, x - xo, y - yo, cst)
File "renpy/display/layout.py", line 1053, in event
rv = i.event(ev, x - xo, y - yo, cst)
File "renpy/display/screen.py", line 720, in event
rv = self.child.event(ev, x, y, st)
File "renpy/display/layout.py", line 1053, in event
rv = i.event(ev, x - xo, y - yo, cst)
File "renpy/display/layout.py", line 1053, in event
rv = i.event(ev, x - xo, y - yo, cst)
File "renpy/display/behavior.py", line 975, in event
return handle_click(self.clicked)
File "renpy/display/behavior.py", line 910, in handle_click
rv = run(action)
File "renpy/display/behavior.py", line 322, in run
new_rv = run(i, *args, **kwargs)
File "renpy/display/behavior.py", line 329, in run
return action(*args, **kwargs)
File "renpy/common/00action_file.rpy", line 372, in __call__
renpy.save(fn, extra_info=save_name)
File "renpy/loadsave.py", line 431, in save
location.save(slotname, sr)
File "renpy/savelocation.py", line 421, in save
raise Exception("Not saved - no valid save locations.")
Exception: Not saved - no valid save locations.