```Traceback (most recent call last):


 "/tmp/.mount_Hello_GD9gw9/usr/lib/python3.7/runpy.py", line 193, in _run_module_as_main

"__main__", mod_spec)


 "/tmp/.mount_Hello_GD9gw9/usr/lib/python3.7/runpy.py", line 85, in _run_code

exec(code, run_globals)


 "/tmp/.mount_Hello_GD9gw9/usr/app/helloworld/__main__.py", line 4, in <module>

main().main_loop()


 "/tmp/.mount_Hello_GD9gw9/usr/app/helloworld/app.py", line 27, in main

return HelloWorld()


 "/tmp/.mount_Hello_GD9gw9/usr/app_packages/toga/app.py", line 208, in __init__

self.factory = get_platform_factory(factory)


 "/tmp/.mount_Hello_GD9gw9/usr/app_packages/toga/platform.py", line 39, in get_platform_factory

from toga_gtk import factory


 "/tmp/.mount_Hello_GD9gw9/usr/app_packages/toga_gtk/factory.py", line 1, in <module>

from .app import App, DocumentApp, MainWindow


 "/tmp/.mount_Hello_GD9gw9/usr/app_packages/toga_gtk/app.py", line 8, in <module>

import gbulb


 "/tmp/.mount_Hello_GD9gw9/usr/app_packages/gbulb/__init__.py", line 1, in <module>

from .glib_events import *


 "/tmp/.mount_Hello_GD9gw9/usr/app_packages/gbulb/glib_events.py", line 12, in <module>

from gi.repository import GLib, Gio


 "/tmp/.mount_Hello_GD9gw9/usr/app_packages/gi/__init__.py", line 42, in <module>

from . import _gi
ImportError: libffi.so.6: cannot open shared object file: No such file or directory

Traceback (most recent call last):


 "/home/pi/env/lib/python3.5/site-packages/googleapiclient/discovery_cache/file_cache.py", line 33, in <module>

from oauth2client.contrib.locked_file import Locked

ImportError: No module named 'oauth2client.contrib.locked_file'
