can't open eclipse internal web browser after set MOZILLA_FIVE_HOME

When I tried to open my Eclipse Oxygen.2 (4.7.2) Internal Web Browser, I got the same error as this question, and after set MOZILLA_FIVE_HOME variable, I got a new error:

No more handles [Browser style SWT.MOZILLA and Java system property org.eclipse.swt.browser.DefaultType=mozilla are not supported with GTK 3 as XULRunner is not ported for GTK 3 yet] org.eclipse.swt.SWTError: No more handles [Browser style SWT.MOZILLA and Java system property org.eclipse.swt.browser.DefaultType=mozilla are not supported with GTK 3 as XULRunner is not ported for GTK 3 yet] at org.eclipse.swt.SWT.error(SWT.java:4559)

this post from 2012 says to install libwebkitgtk-1.0-0 package, however it's not found in my kubuntu.

following this question, I changed my eclipse.ini file:

-startup
plugins/org.eclipse.equinox.launcher_1.4.0.v20161219-1356.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.1.551.v20171108-1834
--launcher.defaultAction
openFile
--launcher.GTK_version
2
--launcher.appendVmargs
-vmargs
-Dosgi.requiredJavaVersion=1.8
-Xms256m
-Xmx1024m
--add-modules=ALL-SYSTEM

and I got a different error:

No more handles [Unknown Mozilla path (MOZILLA_FIVE_HOME not set)] org.eclipse.swt.SWTError: No more handles [Unknown Mozilla path (MOZILLA_FIVE_HOME not set)] at org.eclipse.swt.SWT.error(SWT.java:4559)

How can I make the browser run? I really need it for developing purposes.

edit: config system versions:

$ plasmashell --version
plasmashell 5.16.5
$ kf5-config --version
Qt: 5.12.4
KDE Frameworks: 5.62.0
kf5-config: 1.0

Also:

Sistema operacional: Kubuntu 19.10
Versão do KDE Plasma: 5.16.5
Versão do KDE Frameworks: 5.62.0
Versão da Qt: 5.12.4
Versão do kernel: 5.3.0-40-generic
Tipo de sistema operacional: 64 bits
Processadores: 8 × Intel® Core™ i7-10510U CPU @ 1.80GHz
Memória: 15,4 GiB de RAM

1 Answer

The package for WebKit might have been updated to a new version in your current Linux Ubuntu distro. For example, as said here , it is called something like libwebkit2gtk. You might want to search for such a package with a package manager like synaptic or from the command line with apt-cache search