windmill-labs/windmill · error

HTTP ${response.status}

Error message

HTTP ${response.status}

What it means

resetSlowStats in DbHealth.svelte POSTs to /api/db_health/slow_queries/reset and throws 'HTTP <status>' when the server responds with a non-2xx status AND an empty body. The response body text is preferred as the error message; the HTTP status fallback only appears when the backend returns no body.

Source

Thrown at frontend/src/lib/components/instanceSettings/DbHealth.svelte:34

	let slowSort: SlowQuerySort = $state('total')
	let slowSortLoading = $state(false)
	let expandedQueries: Record<number, boolean> = $state({})

	async function resetSlowStats() {
		if (
			!confirm(
				'Reset pg_stat_statements? This clears cumulative stats for ALL queries on this postgres instance.'
			)
		)
			return
		try {
			const response = await fetch(`/api/db_health/slow_queries/reset`, {
				method: 'POST',
				credentials: 'include'
			})
			if (!response.ok) {
				const text = await response.text()
				throw new Error(text || `HTTP ${response.status}`)
			}
			// refetch with current sort
			const refetch = await fetch(`/api/db_health/slow_queries?sort=${slowSort}`, {
				credentials: 'include'
			})
			if (refetch.ok && data) {
				data.slow_queries = await refetch.json()
				expandedQueries = {}
			}
			sendUserToast('pg_stat_statements reset successfully', false)
		} catch (e: any) {
			sendUserToast('Failed to reset stats: ' + e.message, true)
		}
	}

	async function setSlowSort(sort: SlowQuerySort) {
		if (sort === slowSort || slowSortLoading) return
		slowSort = sort

View on GitHub (pinned to e474e8803c)

Solutions

1. Check the browser network tab for the actual HTTP status of /api/db_health/slow_queries/reset
2. Log in again as an admin user if the status is 401/403
3. Verify the backend version supports the db_health endpoints (404 means the route does not exist)
4. Check backend logs for a 5xx trace if the server errored with an empty body

const session = await getSession()
if (!session || !isAdmin(session)) { showLoginPrompt(); return }

function isOk(r: Response): r is Response & { ok: true } { return r.ok }

try {
  await resetSlowStats()
} catch (e) {
  sendUserToast('Could not reset slow query stats: ' + e.message, true)
  if (e.message === 'HTTP 401' || e.message === 'HTTP 403') reAuth()
}

When it happens

Trigger: Calling resetSlowStats() when the reset endpoint returns an error status with an empty response body — e.g. 401/403 (not admin or expired session), 404/405 (endpoint unavailable in this build/version), or 500 with empty body.

Common situations: Non-admin user opening the instance-settings DB health page (endpoint requires admin); session token expired; running an older backend without the db_health endpoints (404).

Understand the failure class

Background: "API error: {status}" and "HTTP 401/403/404/429/5xx" errors: non-2xx HTTP responses explained — this error's family across 27 libraries.

Related errors

• GET ${path} -> ${resp.status}
• ${text}
• inline_checkpoint API ${resp.status}
• res.statusText
• Variable not found at ${path} or not visible to you: ${e.bod

AI-assisted analysis of windmill-labs/windmill@e474e8803c (2026-09-03). Data as JSON: /api/errors/6507e42570ca7150. Report an issue: GitHub.