```
I'm sorry, but an uncaught exception occurred.
While running game code:
ScriptError: could not find label 'act1_ch.send_letter'.
-- Full Traceback ------------------------------------------------------------
Full traceback:
File "script.rpyc", line 63, in script call
File "scripts/plot/plot_menu.rpyc", line 143, in script call
File "scripts/plot/act_1/act1_menu.rpyc", line 33, in script call
File "scripts/plot/act_1/chapter_3_menus.rpyc", line 420, in script call
File "mechanics/letters.rpyc", line 83, in script call
File "renpy/ast.py", line 1444, in execute
rv = renpy.game.context().call(label, return_site=self.next.name)
File "script.rpyc", line 63, in script call
File "scripts/plot/plot_menu.rpyc", line 143, in script call
File "scripts/plot/act_1/act1_menu.rpyc", line 33, in script call
File "scripts/plot/act_1/chapter_3_menus.rpyc", line 420, in script call
File "mechanics/letters.rpyc", line 83, in script call
File "renpy/script.py", line 910, in lookup
raise ScriptError("could not find label '%s'." % str(original))
ScriptError: could not find label 'act1_ch.send_letter'.
Windows-10-10.0.18362
Ren'Py 7.4.4.1439
Innocent Witches 0.7.0-alpha
Tue Apr 13 06:30:14 2021
```