Activating extension failed notification

[ASaragga]

Bug Description:

Downloaded the Julia extension from the Open VSX Registry. In the TheiaIDE settings there is a Julia item and there the Executable Path is correctly defined. When I try to run the Julia script from the current editor nothing happens. Even when using the command palette and choosing "Julia: Execute active File in the REPL", "Execute Code in the REPL" or any other command one would expect to run the script in the editor. Likely related, when starting a fresh TheiaIDE session I always get the following notification: Activating extension 'Julia' failed: Cannot read properties of undefined (reading "indexOf")

Steps to Reproduce:

1. Install Julia extension from Open VSX Registry
2. Relaunch TheiaIDE
3. Write a short Julia script in the editor and save it
4. Try to run the script using either the top right icon Julia: Run File icons or the command palette

Additional Information

• Operating System: macOS Sequoia 15.2
• Theia Version: Version 1.57.100 (1.57.100.190)

[msujew]

This is a duplicate of #14759, which already contains some discussions on why the extension fails to activate and how to fix it. Please continue the discussion in there.