Version-Release number of selected component:
gnome-gmail-2.4.1-1.fc26

Additional info:
reporter:       libreport-2.9.1
cmdline:        /usr/bin/python3 -tt /usr/share/gnome-gmail/gnomegmail.py -q
crash_function: _extract_handler_and_args
exception_type: AttributeError
executable:     /usr/share/gnome-gmail/gnomegmail.py
kernel:         4.11.9-300.fc26.x86_64
runlevel:       N 5
type:           Python3
uid:            0

Truncated backtrace:
Gtk.py:85:_extract_handler_and_args:AttributeError: Handler onUserSelClose not found

Traceback (most recent call last):
  File "/usr/lib64/python3.6/site-packages/gi/overrides/Gtk.py", line 105, in _builder_connect_callback
    handler, args = _extract_handler_and_args(obj_or_map, handler_name)
  File "/usr/lib64/python3.6/site-packages/gi/overrides/Gtk.py", line 85, in _extract_handler_and_args
    raise AttributeError('Handler %s not found' % handler_name)
AttributeError: Handler onUserSelClose not found

Local variables in innermost frame:
handler: None
handler_name: 'onUserSelClose'
obj_or_map: <__main__.do_preferred.<locals>.Handler object at 0x7f01e5ebab38>