GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed problems in ubuntu

Question

org.eclipse.m2e.logback.configuration: The org.eclipse.m2e.logback.configuration bundle was activated before the state location was initialized. Will retry after the state location is initialized.

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

(Eclipse:5550): GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed

Answer 1

This issue occurs Since ubuntu updated the GTK version from GTK2 to GTK3.

g_base64_encode_step: assertion 'in != NULL' failed

The above error can be fixed by changing the ubuntu theme to default using "gnome-tweak-tool" or other utility tools.

But before doing the same, please read upto the end and proceed. Even though the theme related bug donot arise with default theme, there are lot of discrepencies & issues with ubuntu GTK3 and eclipse SWT. For instance you will receive error similar to

Negative content width -x (allocation y, extents axb) while allocating gadget (node toolbar, owner GtkToolbar)

So it is better to use GTK2 as mentioned in the eclipse forum for the same issue as of now.
https://www.eclipse.org/forums/index.php/t/1081230/

To use eclipse with GTK2 either use one of the following steps.

1. Run the command "env SWT_GTK3=0 SWT_WEBKIT2=1 $EclipsePath"
2. Run the command "export SWT_GTK3=0" and then $EclipsePath.

If you are concerned about security, please ensure that $SWT_WEBKIT2 is set to 1 by giving the command "echo $SWT_WEBKIT2"

Each SWT version requires its corresponding GTK dependency. SWT requires the following GTK+ versions (or newer) to be installed:

Eclipse/SWT 4.11.x         : GTK+ 3.10.0 and its dependencies
Eclipse/SWT 4.10.x         : GTK+ 3.8.0 and its dependencies
Eclipse/SWT 4.6.x - 4.9.x  : GTK+ 2.24.0 and its dependencies (for GTK+ 2) OR GTK+ 3.0.0 and its dependencies (for GTK+ 3)
Eclipse/SWT 4.5.x and newer: GTK+ 2.18.0 and its dependencies (for GTK+ 2) OR GTK+ 3.0.0 and its dependencies (for GTK+ 3)
Eclipse/SWT 4.4.x          : GTK+ 2.10.0 and its dependencies (for GTK+ 2) OR GTK+ 3.0.0 and its dependencies (for GTK+ 3)
Eclipse/SWT 4.3.x          : GTK+ 2.10.0 and its dependencies
Eclipse/SWT 3.8.x          : GTK+ 2.6.0 and its dependencies
Eclipse/SWT 3.6.x - 3.7.x  : GTK+ 2.4.1 and its dependencies
Eclipse/SWT 3.0.x - 3.5.x  : GTK+ 2.2.1 and its dependencies
Eclipse/SWT 2.1.x          : GTK+ 2.0.6 and its dependencies

This information can be obtained from https://www.eclipse.org/swt/faq.php#gtkstartup

To check your SWT version, in eclipse, click

Help -> About Eclipse IDE -> Installation details -> Configuration tab

search for org.eclipse.swt.internal.gtk.version and choose GTK2 or GTK3 based on your SWT version.

The following flow chart explains the SWT flow hierarchy. To know detailed information about SWT, click https://wiki.eclipse.org/SWT/Devel/Gtk/Dev_guide