ı trying to upgrade 18.04 i get an error

[Bilge Gucuk]

Checking package manager
Reading package lists... Done
Building dependency tree
Reading state information... Done
Hit http://tr.archive.ubuntu.com/ubuntu xenial InRelease
Hit http://tr.archive.ubuntu.com/ubuntu xenial-updates InRelease
Hit http://tr.archive.ubuntu.com/ubuntu xenial-backports InRelease
Hit http://security.ubuntu.com/ubuntu xenial-security InRelease
Fetched 0 B in 0s (0 B/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done

Updating repository information
Get:1 http://tr.archive.ubuntu.com/ubuntu bionic InRelease [242 kB]
Get:2 http://security.ubuntu.com/ubuntu bionic-security InRelease [88,7 kB]
Get:3 http://tr.archive.ubuntu.com/ubuntu bionic-updates InRelease [88,7 kB]
Get:4 http://tr.archive.ubuntu.com/ubuntu bionic-backports InRelease [74,6 kB]
Get:5 http://tr.archive.ubuntu.com/ubuntu bionic/main amd64 Packages [1.019 kB]
Get:6 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages [707 kB]
Get:7 http://tr.archive.ubuntu.com/ubuntu bionic/main i386 Packages [1.007 kB]
Get:8 http://security.ubuntu.com/ubuntu bionic-security/main i386 Packages [464 kB]
Get:9 http://tr.archive.ubuntu.com/ubuntu bionic/main Translation-en [516 kB]
Get:10 http://tr.archive.ubuntu.com/ubuntu bionic/main amd64 DEP-11 Metadata [477 kB]
Get:11 http://tr.archive.ubuntu.com/ubuntu bionic/main DEP-11 64x64 Icons [245 kB]
Get:12 http://tr.archive.ubuntu.com/ubuntu bionic/restricted amd64 Packages [9.184 B]
Get:13 http://tr.archive.ubuntu.com/ubuntu bionic/restricted i386 Packages [9.156 B]
Get:14 http://tr.archive.ubuntu.com/ubuntu bionic/restricted Translation-en [3.584 B]
Get:15 http://tr.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages [8.570 kB]
Get:16 http://security.ubuntu.com/ubuntu bionic-security/main Translation-en [224 kB]
Get:17 http://security.ubuntu.com/ubuntu bionic-security/main amd64 DEP-11 Metadata [38,7 kB]
Get:18 http://security.ubuntu.com/ubuntu bionic-security/main DEP-11 64x64 Icons [46,0 kB]
Get:19 http://security.ubuntu.com/ubuntu bionic-security/restricted amd64 Packages [40,3 kB]
Get:20 http://security.ubuntu.com/ubuntu bionic-security/restricted i386 Packages [4.280 B]
Get:21 http://security.ubuntu.com/ubuntu bionic-security/restricted Translation-en [10,2 kB]
Get:22 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 Packages [660 kB]
Get:23 http://security.ubuntu.com/ubuntu bionic-security/universe i386 Packages [619 kB]
Get:24 http://security.ubuntu.com/ubuntu bionic-security/universe Translation-en [219 kB]
Get:25 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 DEP-11 Metadata [42,1 kB]
Get:26 http://security.ubuntu.com/ubuntu bionic-security/universe DEP-11 64x64 Icons [97,5 kB]
Get:27 http://security.ubuntu.com/ubuntu bionic-security/multiverse amd64 Packages [7.392 B]
Get:28 http://security.ubuntu.com/ubuntu bionic-security/multiverse i386 Packages [4.288 B]
Get:29 http://security.ubuntu.com/ubuntu bionic-security/multiverse Translation-en [2.788 B]
Get:30 http://security.ubuntu.com/ubuntu bionic-security/multiverse amd64 DEP-11 Metadata [2.460 B]
Get:31 http://security.ubuntu.com/ubuntu bionic-security/multiverse DEP-11 64x64 Icons [2.638 B]
Get:32 http://tr.archive.ubuntu.com/ubuntu bionic/universe i386 Packages [8.531 kB]
Get:33 http://tr.archive.ubuntu.com/ubuntu bionic/universe Translation-en [4.941 kB]
Get:34 http://tr.archive.ubuntu.com/ubuntu bionic/universe amd64 DEP-11 Metadata [3.287 kB]
Get:35 http://tr.archive.ubuntu.com/ubuntu bionic/universe DEP-11 64x64 Icons [8.420 kB]
Get:36 http://tr.archive.ubuntu.com/ubuntu bionic/multiverse amd64 Packages [151 kB]
Get:37 http://tr.archive.ubuntu.com/ubuntu bionic/multiverse i386 Packages [144 kB]
Get:38 http://tr.archive.ubuntu.com/ubuntu bionic/multiverse Translation-en [108 kB]
Get:39 http://tr.archive.ubuntu.com/ubuntu bionic/multiverse amd64 DEP-11 Metadata [49,7 kB]
Get:40 http://tr.archive.ubuntu.com/ubuntu bionic/multiverse DEP-11 64x64 Icons [225 kB]
Get:41 http://tr.archive.ubuntu.com/ubuntu bionic-updates/restricted amd64 Packages [50,1 kB]
Get:42 http://tr.archive.ubuntu.com/ubuntu bionic-updates/restricted i386 Packages [9.808 B]
Get:43 http://tr.archive.ubuntu.com/ubuntu bionic-updates/restricted Translation-en [12,6 kB]
Get:44 http://tr.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages [932 kB]
Get:45 http://tr.archive.ubuntu.com/ubuntu bionic-updates/main i386 Packages [675 kB]
Get:46 http://tr.archive.ubuntu.com/ubuntu bionic-updates/main Translation-en [318 kB]
Get:47 http://tr.archive.ubuntu.com/ubuntu bionic-updates/main amd64 DEP-11 Metadata [301 kB]
Get:48 http://tr.archive.ubuntu.com/ubuntu bionic-updates/main DEP-11 64x64 Icons [145 kB]
Get:49 http://tr.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages [1.068 kB]
Get:50 http://tr.archive.ubuntu.com/ubuntu bionic-updates/universe i386 Packages [1.014 kB]
Get:51 http://tr.archive.ubuntu.com/ubuntu bionic-updates/universe Translation-en [332 kB]
Get:52 http://tr.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 DEP-11 Metadata [273 kB]
Get:53 http://tr.archive.ubuntu.com/ubuntu bionic-updates/universe DEP-11 64x64 Icons [458 kB]
Get:54 http://tr.archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 Packages [15,5 kB]
Get:55 http://tr.archive.ubuntu.com/ubuntu bionic-updates/multiverse i386 Packages [8.728 B]
Get:56 http://tr.archive.ubuntu.com/ubuntu bionic-updates/multiverse Translation-en [6.352 B]
Get:57 http://tr.archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 DEP-11 Metadata [2.468 B]
Get:58 http://tr.archive.ubuntu.com/ubuntu bionic-updates/multiverse DEP-11 64x64 Icons [2.638 B]
Get:59 http://tr.archive.ubuntu.com/ubuntu bionic-backports/main amd64 Packages [7.516 B]
Get:60 http://tr.archive.ubuntu.com/ubuntu bionic-backports/main i386 Packages [7.508 B]
Get:61 http://tr.archive.ubuntu.com/ubuntu bionic-backports/main Translation-en [4.764 B]
Get:62 http://tr.archive.ubuntu.com/ubuntu bionic-backports/universe amd64 Packages [7.484 B]
Get:63 http://tr.archive.ubuntu.com/ubuntu bionic-backports/universe i386 Packages [7.472 B]
Get:64 http://tr.archive.ubuntu.com/ubuntu bionic-backports/universe Translation-en [4.436 B]
Get:65 http://tr.archive.ubuntu.com/ubuntu bionic-backports/universe amd64 DEP-11 Metadata [7.968 B]
Get:66 http://tr.archive.ubuntu.com/ubuntu bionic-backports/universe DEP-11 64x64 Icons [29 B]
Fetched 47,1 MB in 6s (330 kB/s)

(appstreamcli:8474): GLib-CRITICAL **: g_strchug: assertion 'string != NULL' failed

(appstreamcli:8474): GLib-CRITICAL **: g_strchomp: assertion 'string != NULL' failed

(appstreamcli:8474): GLib-CRITICAL **: g_strchug: assertion 'string != NULL' failed

(appstreamcli:8474): GLib-CRITICAL **: g_strchomp: assertion 'string != NULL' failed

(appstreamcli:8474): GLib-CRITICAL **: g_strchug: assertion 'string != NULL' failed

(appstreamcli:8474): GLib-CRITICAL **: g_strchomp: assertion 'string != NULL' failed
AppStream cache update completed, but some metadata was ignored due to errors.

Checking package manager
Reading package lists... Done
Building dependency tree
Reading state information... Done

Calculating the changes

Calculating the changes

Could not calculate the upgrade

An unresolvable problem occurred while calculating the upgrade.

If none of this applies, then please report this bug using the
command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal.If
you want to investigate this yourself the log files in
'/var/log/dist-upgrade' will contain details about the upgrade.
Specifically, look at 'main.log' and 'apt.log'.

Restoring original system state

Aborting
Reading package lists... Done
Building dependency tree
Reading state information... Done

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.29
ProcVersionSignature: Ubuntu 4.15.0-99.100~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-99-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.23
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Mon May 4 17:43:08 2020
InstallationDate: Installed on 2020-03-06 (58 days ago)
InstallationMedia: Ubuntu 16.04.6 LTS "Xenial Xerus" - Release amd64 (20190227)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2020-05-04 (0 days ago)
mtime.conffile..etc.update-manager.release-upgrades: 2020-04-29T17:52:57.162430

[Juhani Numminen (jsonic)]

Likely the ROS packages are preventing your upgrade. The installer has produced a list of obsolete packages. You may need to remove the packages, and after the upgrade you can reinstall them if they have been made available for Ubuntu 18.04.

Here is the long list from VarLogDistupgradeMainlog.txt:

code libpyside-py3-2.0 libpyside2-dev libpyside2.0 libshiboken-py3-2.0 libshiboken2-dev libshiboken2.0 python-catkin-pkg-modules python-pyside2 python-pyside2.qtconcurrent python-pyside2.qtcore python-pyside2.qtgui python-pyside2.qthelp python-pyside2.qtnetwork python-pyside2.qtprintsupport python-pyside2.qtqml python-pyside2.qtquick python-pyside2.qtquickwidgets python-pyside2.qtscript python-pyside2.qtsql python-pyside2.qtsvg python-pyside2.qttest python-pyside2.qtuitools python-pyside2.qtwebkit python-pyside2.qtwebkitwidgets python-pyside2.qtwidgets python-pyside2.qtx11extras python-pyside2.qtxml python-rosdep-modules python-rosdistro-modules python-rospkg-modules ros-kinetic-actionlib ros-kinetic-actionlib-msgs ros-kinetic-actionlib-tutorials ros-kinetic-amcl ros-kinetic-angles ros-kinetic-base-local-planner ros-kinetic-bhand-controller ros-kinetic-bond ros-kinetic-bond-core ros-kinetic-bondcpp ros-kinetic-bondpy ros-kinetic-camera-calibration ros-kinetic-camera-calibration-parsers ros-kinetic-camera-info-manager ros-kinetic-catkin ros-kinetic-class-loader ros-kinetic-clear-costmap-recovery ros-kinetic-cmake-modules ros-kinetic-collada-parser ros-kinetic-collada-urdf ros-kinetic-common-msgs ros-kinetic-common-tutorials ros-kinetic-compressed-depth-image-transport ros-kinetic-compressed-image-transport ros-kinetic-control-msgs ros-kinetic-controller-interface ros-kinetic-controller-manager ros-kinetic-controller-manager-msgs ros-kinetic-costmap-2d ros-kinetic-cpp-common ros-kinetic-cv-bridge ros-kinetic-depth-image-proc ros-kinetic-desktop ros-kinetic-desktop-full ros-kinetic-diagnostic-aggregator ros-kinetic-diagnostic-analysis ros-kinetic-diagnostic-common-diagnostics ros-kinetic-diagnostic-msgs ros-kinetic-diagnostic-updater ros-kinetic-diagnostics ros-kinetic-dynamic-reconfigure ros-kinetic-eigen-conversions ros-kinetic-eigen-stl-containers ros-kinetic-executive-smach ros-kinetic-filters ros-kinetic-gazebo-dev ros-kinetic-gazebo-msgs ros-kinetic-gazebo-plugins ros-kinetic-gazebo-ros ros-kinetic-gazebo-ros-pkgs ros-kinetic-gencpp ros-kinetic-geneus ros-kinetic-genlisp ros-kinetic-genmsg ros-kinetic-gennodejs ros-kinetic-genpy ros-kinetic-geometric-shapes ros-kinetic-geometry ros-kinetic-geometry-msgs ros-kinetic-geometry-tutorials ros-kinetic-gl-dependency ros-kinetic-gmapping ros-kinetic-hardware-interface ros-kinetic-hls-lfcd-lds-driver ros-kinetic-image-common ros-kinetic-image-geometry ros-kinetic-image-pipeline ros-kinetic-image-proc ros-kinetic-image-publisher ros-kinetic-image-rotate ros-kinetic-image-transport ros-kinetic-image-transport-plugins ros-kinetic-image-view ros-kinetic-interactive-marker-tutorials ros-kinetic-interactive-markers ros-kinetic-joint-state-publisher ros-kinetic-kdl-conversions ros-kinetic-kdl-parser ros-kinetic-laser-assembler ros-kinetic-laser-filters ros-kinetic-laser-geometry ros-kinetic-laser-pipeline ros-...

[Bilge Gucuk (bilgegck)]

how can i that packages

[Bilge Gucuk (bilgegck)]

how can i remove that packages