zed-industries/zed · error

cannot open file {:?}

Error message

cannot open file {:?}

What it means

Returned by Workspace::open_path when no registered build_project_item_for_path handler can open the given ProjectPath — i.e. no editor knows how to handle this file extension/kind. The path that failed is included; opening it is unsupported in this configuration.

Source

Thrown at crates/workspace/src/workspace.rs:1073

    fn register<T: ProjectItem>(&mut self) {
        self.build_project_item_fns_by_type.insert(
            TypeId::of::<T::Item>(),
            |item, project, pane, window, cx| {
                let item = item.downcast().unwrap();
                Box::new(cx.new(|cx| T::for_project_item(project, pane, item, window, cx)))
                    as Box<dyn ItemHandle>
            },
        );
        self.build_project_item_for_path_fns
            .push(|project, project_path, window, cx| {
                let project_path = project_path.clone();
                let is_file = project
                    .read(cx)
                    .entry_for_path(&project_path, cx)
                    .is_some_and(|entry| entry.is_file());
                let entry_abs_path = project.read(cx).absolute_path(&project_path, cx);
                let is_local = project.read(cx).is_local();
                let project_item =
                    <T::Item as project::ProjectItem>::try_open(project, &project_path, cx)?;
                let project = project.clone();
                Some(window.spawn(cx, async move |cx| {
                    match project_item.await.with_context(|| {
                        format!(
                            "opening project path {:?}",
                            entry_abs_path.as_deref().unwrap_or(&project_path.path.as_std_path())
                        )
                    }) {
                        Ok(project_item) => {
                            let project_item = project_item;
                            let project_entry_id: Option<ProjectEntryId> =
                                project_item.read_with(cx, project::ProjectItem::entry_id);
                            let build_workspace_item = Box::new(
                                |pane: &mut Pane, window: &mut Window, cx: &mut Context<Pane>| {
                                    Box::new(cx.new(|cx| {
                                        T::for_project_item(
                                            project,

View on GitHub (pinned to 9d272b0363)

Solutions

1. Install an extension that handles this file type
2. Open the file with the default text editor

When it happens

Trigger: Thrown at crates/workspace/src/workspace.rs:937 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of zed-industries/zed@9d272b0363 (2026-08-20). Data as JSON: /api/errors/f98ea9758f1154e4. Report an issue: GitHub.