Can't reload theia when workspace has the .tree file

[fengwang913]

Hey,
1.
I generated a treeEditor extension using the yo theia-extension command and was able to run the treeEditor extension successfully.

Then, I created a new file named tree-example.tree using the "New Example File" option under the Tree Editor menu. Everything was fine up to this point. However, when I refresh the webpage at this stage, the page fails to reopen. The error message is as follows:

In the treeEditor extension, clicking on a .tree file doesn't render any elements by default. However, I would like it to render specific elements by default. For example, I want the user to click on a .tree file, have ControlUnit selected by default, and render the ControlUnitView. How can I achieve this?

Any help would be appreciated.

[msujew]

Hey @fengwang913,

we recently had a breaking change in the Saveable interface that leads to this error. The dependency for the widget is outdated. Please open an issue with the developers of that package.

[fengwang913]

Appreciate your suggestion! I've opened the issue #13803 to track this problem.