Unable to install last release CNES plugin on Eclipse

[PatPV]

Hello everyone!

We have recently downloaded your i-Code plugin (fr.cnes.icode.repository-4.1.0-SNAPSHOT.zip) from your latest release. When trying to install it in Eclipse (Help > Install New Software...), the installation process is interrupted because of the following error:

Do you know what is our problem? Is it a compatibility issue?

User environment:

• OS: SUSE Linux Enterprise Server 12 (x86_64)
• Java version:
  openjdk version "1.8.0_222"
  OpenJDK Runtime Environment (IcedTea 3.13.0) (build 1.8.0_222-b10 suse-27.35.2-x86_64)
  OpenJDK 64-Bit Server VM (build 25.222-b10, mixed mode)
• i-Code version: i-Code CNES 4.1.0
• Eclipse:
  Version: 2021-06 (4.20.0)
  Build id: 20210612-2011

For the record, we have also downloaded release i-Code CNES 3.1.0 plugin (i-CodeCNES-3.1.0-eclipse-plugin.zip) and successfully installed it in our Eclipse IDE. The only drawback is that we cannot see the rules and metrics inside the Window > Preferences section of i-Code (see image):