terminator crashed with AttributeError in wrapcloseterm(): 'NoneType' object has no attribute 'grab_focus'

[Isayev Anton]

every time if i close terminator

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: terminator 0.98-1
ProcVersionSignature: Ubuntu 4.4.0-15.31-lowlatency 4.4.6
Uname: Linux 4.4.0-15-lowlatency x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
CrashCounter: 1
CurrentDesktop: GNOME
Date: Thu Mar 24 07:41:42 2016
EcryptfsInUse: Yes
ExecutablePath: /usr/share/terminator/terminator
InstallationDate: Installed on 2016-03-07 (16 days ago)
InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160307)
InterpreterPath: /usr/bin/python2.7
LocalLibraries: /usr/local/lib/python2.7/dist-packages/psutil/_psutil_linux.so /usr/local/lib/python2.7/dist-packages/psutil/_psutil_posix.so
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/x-terminal-emulator
PythonArgs: ['/usr/bin/x-terminal-emulator']
SourcePackage: terminator
Title: terminator crashed with AttributeError in wrapcloseterm(): 'NoneType' object has no attribute 'grab_focus'
Traceback:
 Traceback (most recent call last):
   File "/usr/share/terminator/terminatorlib/paned.py", line 281, in wrapcloseterm
     Terminator().find_terminal_by_uuid(sibling.get_toplevel().last_active_term.urn).grab_focus()
 AttributeError: 'NoneType' object has no attribute 'grab_focus'
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Bryce Harrington (bryce)]

I got the same traceback on Ubuntu 20.04. This occurred while resizing a pane separator. One of the panes had a large scrollback, although not abnormally so.

CurrentDesktop: XFCE
Date: Tue Jun 8 17:50:51 2021
ExecutablePath: /usr/share/terminator/terminator
ExecutableTimestamp: 1586793637
InterpreterPath: /usr/bin/python3.8
ProcCmdline: /usr/bin/python3 /usr/bin/terminator
ProcCwd: /home/bryce
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash

Traceback:
 Traceback (most recent call last):
   File "/usr/share/terminator/terminatorlib/paned.py", line 312, in wrapcloseterm
     Terminator().find_terminal_by_uuid(sibling.get_toplevel().last_active_term.urn).grab_focus()
 AttributeError: 'NoneType' object has no attribute 'urn'

[Bryce Harrington (bryce)]

My above traceback is slightly different than the OP but there seem to be some known issues in this section of code also with similar backtraces:

"'NoneType' object has no attribute 'grab_focus'"
  * https://bugs.launchpad.net/ubuntu/+source/terminator/+bug/1561345
  * https://bugzilla.redhat.com/show_bug.cgi?id=1898476
  * https://github.com/gnome-terminator/terminator/pull/145/commits/9edefb6f3285fa236656bcc2440661d1a107174b
  * https://errors.ubuntu.com/problem/f0c07815340e8b5e1e401bead074eaf287e8ca00

"'VPaned' object has no attribute 'is_child_notebook'"
  * https://errors.ubuntu.com/problem/9aa9259838a67d8c24c342b106efd841b516340b
  * https://bugs.launchpad.net/ubuntu/+source/terminator/+bug/1931317
  * https://bugzilla.redhat.com/show_bug.cgi?id=1898476

This may be a suitable fix:
            if focus_sibling:
                first_term_sibling.grab_focus()
            elif not sibling.get_toplevel().is_child_notebook():
                try:
                    Terminator().find_terminal_by_uuid(sibling.get_toplevel().last_active_term.urn).grab_focus()
  except AttributeError:
                    if sibling.get_toplevel().last_active_term:
                        dbg('cannot find terminal with uuid: %s' % sibling.get_toplevel().last_active_term.urn)
                    else:
                        dbg('last active terminal does not have a uuid')