webkitgtk3 problem in "Visual Layout" node editor

KNIME Analytics Platform
1

Hi Knime folks,

got KNIME running here for a couple of guys on AWS using their Amazon Linux 2. Actually most things work. There is just one tiny thing that doesn’t. I thought why not challenge the KNIME community, probably someone experienced this problem also.

Steps to reproduce:

  • Add a widget node (i.e. Double Widget)
  • Right click “Create Component”
  • press “ctrl” + double click on component
  • Open NodeOrganizer in the top panel (see attachment)
    => Error popps up (see attachment)

node_layout_click
node_layout_problem

Facts:

  • Firefox is installed & working.
  • On KNIME Hub Searches firefox opens.
  • We had the error with webkitgtk not installed before, but the error is not prompted anymore as we installed webkitgtk3.
  • Node information is correctly shown on the right side.
  • I am aware of KNIME FAQ Q6 :), but doesn’t solve the problem.

Environment:

  • Amazon Linux 2 with Mate from amazon linux extras (basically a modified CentOS with yum)
  • webkitgtk is installed as package in version :
[user@server ~]$ rpm -qa |grep webkit
webkitgtk3-2.4.11-2.amzn2.0.2.x86_64

Questions:

  • If this works for you, which version of webkitgtk3 are you using?
  • Is it known which version of webkitgtk3 is required?
  • Are there any known workarounds for this problem?

thx in advance, Regards iptizer

2

Hi @IPtizer,

I got a few questions for you so that I can try reproducing this issue:

  1. Are you running the instances via amazon workspaces or directly through ec2?
  2. How are you connecting to these instances, VNC?

best,
Gabriel

3

Hi Gabriel,

sorry for the late response.

  1. We’re running EC2 directly.
  2. We’re connecting via RDP.

Sidenote: Behaviour changed now in Knime 4.2.0. Now the error message is displayed directly after the start of Knime. Probably there has been a version upgrade of the library that uses the libkitgtk lib?

Regards, Moritz

4

Okay, I solved it by myself as explained in my other post.

[user@mylinux ~]$ rpm -qa |grep webkit
webkitgtk4-plugin-process-gtk2-2.22.7-2.amzn2.0.1.x86_64
webkitgtk4-2.22.7-2.amzn2.0.1.x86_64
webkitgtk4-jsc-2.22.7-2.amzn2.0.1.x86_64

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5

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