windmill-labs/windmill · error

No app draft found for "${path}".

Error message

No app draft found for "${path}".

What it means

Thrown by rebaseAppDraft when no app draft is stored for the path, or the draft value is a string or lacks a `files` field (i.e. not a real app draft). The app rebase returns the draft's changes versus its fork base as a diff; with no valid draft there is nothing to diff.

Source

Thrown at frontend/src/lib/components/copilot/chat/global/core.ts:6367

			success: true,
			message:
				`Discarded the stale draft for "${path}". Your changes are in "your_changes" (a JSON diff against ` +
				`the version you forked from). Re-apply them with the flow edit tools — the new draft will be ` +
				`based on the latest deployed version (version ${latest.version_id}) — then deploy.`,
			latest_version: latest.version_id,
			your_changes: yourChanges
		},
		null,
		2
	)
}

async function rebaseAppDraft(path: string, ctx: WriteDraftCtx): Promise<string> {
	const { workspace, toolId, toolCallbacks } = ctx

	const draft = await getGlobalDraft(workspace, 'app', path)
	if (!draft || !draft.value || typeof draft.value === 'string' || !('files' in draft.value)) {
		throw new Error(`No app draft found for "${path}".`)
	}
	if (!(await AppService.existsApp({ workspace, path }))) {
		throw new Error(`App "${path}" is not deployed; there is no newer version to rebase onto.`)
	}

	const deployed = await AppService.getAppByPath({ workspace, path })
	const headVersion = deployed.versions?.[deployed.versions.length - 1]
	const baseVersion = draft.parentVersionId
	if (baseVersion != null && baseVersion === headVersion) {
		const message = `Draft "${path}" is already based on the latest deployed version (${headVersion}).`
		toolCallbacks.setToolStatus(toolId, { content: message })
		return JSON.stringify({
			success: true,
			alreadyLatest: true,
			latest_version: headVersion,
			message
		})
	}

View on GitHub (pinned to e474e8803c)

Solutions

1. Create an app draft (edit the app or use the app write tools) before rebasing
2. Verify the path points at an app that actually has a draft
3. If the draft was discarded, re-apply the saved your_changes diff with the app tools

When it happens

Trigger: Thrown at frontend/src/lib/components/copilot/chat/global/core.ts:6367 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of windmill-labs/windmill@e474e8803c (2026-09-03). Data as JSON: /api/errors/c8363338c61b64af. Report an issue: GitHub.