Hex Common Errors Error Reference 401 Unauthorized Cause: Token invalid, expired, or missing. Fix: Regenerate token in Hex workspace settings. 403 Forbidden — Read-Only Token Cause: Token has "Read projects" scope but RunProject requires "Run projects". Fix: Create new token with "Run projects" scope. 404 Not Found — Project Cause: Project ID wrong or project not published. Fix: Verify project ID. Only published projects can be run via API. 429 Too Many Requests Cause: RunProject is limited to 20 requests/min, 60/hr. Fix: Queue runs with delays. See . Run Status: ERRORED Cause: SQL query, Pyt…