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since last Friday, my wingpanel (and settings) are crashing. I didn't change OS in any way except some OS updates. I tried several fixes found on stackexchange, reddit and bug reports including:

Removing all wingpanel indicators, at least those with name starting with wingpanel-indicator.

Uninstalled elementarytweaks using apt purge

sudo apt-get remove indicator-synapse

sudo apt remove switchboard-plug-security-privacy

removing ~./config

reinstalling wingpanel using apt remove and apt purge

Creating new account

The error when running with wingpanel(crash for settings below) --debug flag:

** (wingpanel:12939): WARNING **: Couldn't connect to accessibility bus: Failed to connect to socket /tmp/dbus-CeZKyHU9bw: Connection refused (wingpanel:12939): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:2045:14: 'min-height' is not a valid property name (wingpanel:12939): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:2046:13: 'min-width' is not a valid property name (wingpanel:12939): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:2051:13: 'min-width' is not a valid property name [INFO 08:42:03.387099] Application.vala:153: System Panel version: 2.0 .2 [INFO 08:42:03.387168] Application.vala:155: Kernel version: 4.4.0-78-generic [DEBUG 08:42:03.388244] [Gtk] Connecting to session manager [DEBUG 08:42:03.395298] Slingshot.vala:85: Activating Slingshot [DEBUG 08:42:03.395441] IndicatorManager.vala:314: app-launcher registered [DEBUG 08:42:03.398383] Settings.vala:163: Loading settings from schema 'org.pantheon.desktop.slingshot' [DEBUG 08:42:03.402265] sql-schema.vala:204: schema_version is 10 [DEBUG 08:42:03.403555] AppSystem.vala:50: Updating Applications menu tree... [DEBUG 08:42:03.453277] sql-schema.vala:204: schema_version is 10 [06:42:03.498754 Gtk-Warning] Theme parsing error: gtk-widgets.css:2045:14: 'min-height' is not a valid property name [06:42:03.498788 Gtk-Warning] Theme parsing error: gtk-widgets.css:2046:13: 'min-width' is not a valid property name [06:42:03.498811 Gtk-Warning] Theme parsing error: gtk-widgets.css:2051:13: 'min-width' is not a valid property name [06:42:04.164340 Gtk-Critical] gtk_window_resize: assertion 'width > 0' failed [INFO 08:42:04.171328] DBusService.vala:64: Service registration suceeded [06:42:04.213923 Warning] [DesktopFileInfo] Unable to get exec for Other [06:42:04.221050 Warning] [DesktopFileInfo] Unable to create AppInfo Systemd is not present [06:42:04.276076 Critical] string_contains: assertion 'self != NULL' failed [06:42:04.276090 Critical] string_contains: assertion 'self != NULL' failed Segmentation fault (core dumped)

Just to be sure I included switchboard(settings) crash output because it is similar and started also last Friday.