```
I'm sorry, but an uncaught exception occurred.
While running game code:
File "renpy/common/000statements.rpy", line 570, in execute_call_screen
NameError: Name 'MC' is not defined.
-- Full Traceback ------------------------------------------------------------
Full traceback:
File "/storage/emulated/11/MEGA/MEGA Downloads/photo-hunt-v0.11.2-lite/photo-hunt-v0.11.2-lite/game/script_loc/loc1_mc_room.rpyc", line 24, in script
File "renpy/ast.py", line 1969, in execute
File "renpy/ast.py", line 1957, in call
File "renpy/statements.py", line 278, in call
File "renpy/common/000statements.rpy", line 570, in execute_call_screen
File "renpy/exports.py", line 2983, in call_screen
File "renpy/ui.py", line 298, in interact
File "renpy/display/core.py", line 3101, in interact
File "renpy/display/core.py", line 3512, in interact_core
File "renpy/display/core.py", line 567, in visit_all
File "renpy/display/core.py", line 567, in visit_all
File "renpy/display/core.py", line 567, in visit_all
File "renpy/display/screen.py", line 432, in visit_all
File "renpy/display/core.py", line 3512, in <lambda>
File "renpy/display/screen.py", line 443, in per_interact
File "renpy/display/screen.py", line 631, in update
File "0x52/screens.rpy.x52", line 15, in execute
File "0x52/screens.rpy.x52", line 15, in execute
File "0x52/screens.rpy.x52", line 44, in execute
File "0x52/screens.rpy.x52", line 213, in execute
File "0x52/screens.rpy.x52", line 224, in execute
File "0x52/screens.rpy.x52", line 225, in execute
File "0x52/screens.rpy.x52", line 226, in execute
File "0x52/screens.rpy.x52", line 227, in execute
File "0x52/screens.rpy.x52", line 229, in execute
File "renpy/text/text.py", line 1525, in __init__
File "renpy/text/text.py", line 1644, in set_text
File "renpy/substitutions.py", line 270, in substitute
File "/home/tom/ab/renpy-build/tmp/install.linux-x86_64/lib/python2.7/string.py", line 563, in vformat
File "/home/tom/ab/renpy-build/tmp/install.linux-x86_64/lib/python2.7/string.py", line 585, in _vformat
File "/home/tom/ab/renpy-build/tmp/install.linux-x86_64/lib/python2.7/string.py", line 646, in get_field
File "/home/tom/ab/renpy-build/tmp/install.linux-x86_64/lib/python2.7/string.py", line 605, in get_value
File "renpy/substitutions.py", line 228, in __getitem__
NameError: Name 'MC' is not defined.
```