```
I'm sorry, but an uncaught exception occurred.
While running game code:
AttributeError: 'NoneType' object has no attribute 'append'
-- Full Traceback ------------------------------------------------------------
Full traceback:
File "_layout/screen_main_menu.rpymc", line 28, in script
File "renpy/ast.py", line 914, in execute
File "renpy/python.py", line 2028, in py_exec_bytecode
File "renpy/common/_layout/screen_main_menu.rpym", line 28, in <module>
File "renpy/common/_layout/screen_main_menu.rpym", line 35, in _execute_python_hide
File "renpy/ui.py", line 297, in interact
File "renpy/display/core.py", line 2702, in interact
File "renpy/display/core.py", line 3194, in interact_core
File "renpy/display/core.py", line 2094, in draw_screen
File "renpy/display/render.pyx", line 490, in renpy.display.render.render_screen (gen/renpy.display.render.c:6805)
File "renpy/display/render.pyx", line 259, in renpy.display.render.render (gen/renpy.display.render.c:3520)
File "renpy/display/layout.py", line 722, in render
File "renpy/display/render.pyx", line 166, in renpy.display.render.render (gen/renpy.display.render.c:4075)
File "renpy/display/render.pyx", line 259, in renpy.display.render.render (gen/renpy.display.render.c:3520)
File "renpy/display/layout.py", line 722, in render
File "renpy/display/render.pyx", line 166, in renpy.display.render.render (gen/renpy.display.render.c:4075)
File "renpy/display/render.pyx", line 259, in renpy.display.render.render (gen/renpy.display.render.c:3520)
File "renpy/display/layout.py", line 722, in render
File "renpy/display/render.pyx", line 166, in renpy.display.render.render (gen/renpy.display.render.c:4075)
File "renpy/display/render.pyx", line 259, in renpy.display.render.render (gen/renpy.display.render.c:3520)
File "renpy/display/screen.py", line 675, in render
File "renpy/display/render.pyx", line 166, in renpy.display.render.render (gen/renpy.display.render.c:4075)
File "renpy/display/render.pyx", line 259, in renpy.display.render.render (gen/renpy.display.render.c:3520)
File "renpy/display/layout.py", line 722, in render
File "renpy/display/render.pyx", line 166, in renpy.display.render.render (gen/renpy.display.render.c:4075)
File "renpy/display/render.pyx", line 259, in renpy.display.render.render (gen/renpy.display.render.c:3520)
File "renpy/display/layout.py", line 722, in render
File "renpy/display/render.pyx", line 166, in renpy.display.render.render (gen/renpy.display.render.c:4075)
File "renpy/display/render.pyx", line 268, in renpy.display.render.render (gen/renpy.display.render.c:3707)
AttributeError: 'NoneType' object has no attribute 'append'
```
this error code happens on android