```
I'm sorry, but an uncaught exception occurred.
While running game code:
File "renpy/common/000statements.rpy", line 671, in execute_call_screen
NameError: Name 'tube' is not defined.
-- Full Traceback ------------------------------------------------------------
Full traceback:
File "src/loop.rpyc", line 2, in script call
File "src/loop.rpyc", line 11, in script call
File "src/plot/bar05.rpyc", line 779, in script call
File "src/mini.rpyc", line 133, in script
File "renpy/ast.py", line 1969, in execute
File "renpy/ast.py", line 1951, in call
File "renpy/statements.py", line 349, in call
File "renpy/common/000statements.rpy", line 671, in execute_call_screen
File "renpy/exports.py", line 3420, in call_screen
File "renpy/ui.py", line 301, in interact
File "renpy/display/core.py", line 2166, in interact
File "renpy/display/core.py", line 3203, in interact_core
File "renpy/display/focus.py", line 611, in mouse_handler
File "renpy/display/focus.py", line 537, in change_focus
File "renpy/display/focus.py", line 194, in set_focused
File "renpy/display/tts.py", line 398, in displayable
File "renpy/display/behavior.py", line 1189, in _tts_all
File "renpy/display/displayable.py", line 600, in _tts_common
File "renpy/substitutions.py", line 371, in substitute
File "renpy/substitutions.py", line 86, in interpolate
File "renpy/substitutions.py", line 78, in interpolate
File "renpy/python.py", line 1209, in py_eval
File "renpy/python.py", line 1202, in py_eval_bytecode
File "<none>", line 1, in <module>
File "renpy/substitutions.py", line 313, in __getitem__
NameError: Name 'tube' is not defined.
```