Colcon builds but gives ERROR:dbus.connection:Unable to set arguments [closed]
I am following the following tutorial and am trying to build the package. The package builds successfully but it gives me this dbus.connection error. Googling was of no help.
colcon build --packages-select py_pubsub
Starting >>> py_pubsub
Finished <<< py_pubsub [0.46s]
Summary: 1 package finished [0.55s]
[0.628s] ERROR:dbus.connection:Unable to set arguments ('colcon', 0, '/usr/lib/python3/dist-packages/colcon_notification/desktop_notification/image/colcon-success.ico', '`colcon build` successful', '/home/lieu/dev/imda-scene-understander-pipeline/src', [], {'transient': True}, -1) according to signature 'susssasa{ss}i': <class 'TypeError'>: Expected a string or unicode object
[0.
628s] ERROR:colcon.colcon_notification.desktop_notification:Exception in desktop notification extension 'notify2': Expected a string or unicode object
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/colcon_notification/desktop_notification/__init__.py", line 106, in notify
retval = extension.notify(
File "/usr/lib/python3/dist-packages/colcon_notification/desktop_notification/notify2.py", line 51, in notify
self._last_notification.show()
File "/usr/lib/python3/dist-packages/notify2.py", line 181, in show
nid = dbus_iface.Notify(appname, # app_name (spec names)
File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 72, in __call__
return self._proxy_method(*args, **keywords)
File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 141, in __call__
return self._connection.call_blocking(self._named_service,
File "/usr/lib/python3/dist-packages/dbus/connection.py", line 643, in call_blocking
message.append(signature=signature, *args)
TypeError: Expected a string or unicode object
Results of dpkg -l | grep dbus:
```
ii at-spi2-core 2.36.0-2 amd64 Assistive Technology Service Provider Interface (dbus core)
ii dbus 1.12.16-2ubuntu2.1 amd64 simple interprocess messaging system (daemon and utilities)
ii dbus-user-session 1.12.16-2ubuntu2.1 amd64 simple interprocess messaging system (systemd --user integration)
ii dbus-x11 1.12.16-2ubuntu2.1 amd64 simple interprocess messaging system (X11 deps)
ii libdbus-1-3:amd64 1.12.16-2ubuntu2.1 amd64 simple interprocess messaging system (library)
ii libdbus-1-dev:amd64 1.12.16-2ubuntu2.1 amd64 simple interprocess messaging system (development headers)
ii libdbus-glib-1-2:amd64 0.110-5fakssync1 amd64 deprecated library for D-Bus IPC
ii libdbusmenu-glib4:amd64 16.04.1+18.10.20180917-0ubuntu6 amd64 library for passing menus over DBus
ii libdbusmenu-gtk3-4:amd64 16.04.1+18.10.20180917-0ubuntu6 amd64 library for passing menus over DBus - GTK+ version
ii libdbusmenu-gtk4:amd64 16.04.1+18.10.20180917-0ubuntu6 amd64 library for passing menus over DBus - GTK+ version
ii libdbusmenu-qt5-2:amd64 0.9.3+16.04.20160218-2build1 amd64 Qt implementation of the DBusMenu protocol
ii libdleyna-connector-dbus-1.0-1:amd64 0.3.0-1 amd64 DBus connector module for the dLeyna services
ii libkf5dbusaddons-bin 5.68.0-0ubuntu1 amd64 class library for qtdbus
ii libkf5dbusaddons-data 5.68.0-0ubuntu1 all class library for qtdbus
ii libkf5dbusaddons5:amd64 5.68.0-0ubuntu1 amd64 class library for qtdbus
ii libnet-dbus-perl 1.2.0-1 amd64 Perl extension for the DBus bindings
ii libqt5dbus5:amd64 5.12.8+dfsg-0ubuntu1 amd64 Qt 5 D-Bus module
ii python3-dbus 1.2.16-1build1 amd64 simple interprocess messaging system (Python 3 interface)
ii python3-pydbus 0.6.0-2build1 all Pythonic D-Bus library (Python 3)
ii xdg-dbus-proxy 0.1.2-1 amd64 filtering D-Bus proxy
lieu@pop-os ~>
```
Compared to my system where I can't reproduce the issue the reported signature is
susssasa{sv}i- notsusssasa{ss}i. What platform are you on and what version ofdbusare you using (dpkg -l | grep dbus)?I am on Pop OS 20.04, which is similar to Ubuntu 20.04.
Results of
dpkg -l | grep dbusare too long: I am editing the post to add it in.Can you please try to apply the patch from https://github.com/colcon/colcon-noti... locally to
/usr/lib/python3/dist-packages/notify2.pyand check if that works for you?@Lieu Zheng Hong ?
@Dirk Thomas, sorry for the late reply.
My
/usr/lib/python3/dist-packages/notify2.pylooks different from the one in the GH issue. There doesn't seem to be anotifyfunction.EDIT: okay, it was in
/usr/lib/python3/dist-packages/colcon_notification/desktop_notification/notify2.py. I edited the file but there's still an error:[0.727s] ERROR:dbus.connection:Unable to set arguments ('colcon', 0, '/usr/lib/python3/dist-packages/colcon_notification/desktop_notification/image/colcon-success.ico', '`colcon build` successful', '/home/lieu/dev/imda-scene-understander-pipeline', [], {'transient': dbus.Byte(1)}, -1) according to signature 'susssasa{ss}i': <class 'TypeError'>: Expected a string or unicode object [0.728s] ERROR:colcon.colcon_notification.desktop_notification:Exception in desktop notification extension 'notify2': Expected a string or unicode objectSorry, the file should be in
/usr/lib/python3/dist-packages/colcon_notification/desktop_notification/notify2.py.@Dirk Thomas, please check my edit.
It seems the PR doesn't work around the problem. I don't know why the signature type is different (wrong?) for you. Please try to come up with a reproducible example (probably best a Dockerfile) to further triage or a patch which makes it work for you locally which I am happy to review.