we-promise/sure · error · Provider::YahooFinance::AuthenticationError

Failed to authenticate with Yahoo Finance: #{e.message}

Error message

Failed to authenticate with Yahoo Finance: #{e.message}

What it means

Error "Failed to authenticate with Yahoo Finance: #{e.message}" thrown in we-promise/sure.

Source

Thrown at app/models/provider/yahoo_finance.rb:884

      cache_key = "#{@cache_prefix}_auth_crumb"
      cached = Rails.cache.read(cache_key)
      if cached.present?
        return cached if valid_crumb?(cached.second)

        Rails.cache.delete(cache_key)
      end

      cookie, crumb, cache_duration = request_cookie_and_crumb(auth_client)
      result = [ cookie, crumb ]
      Rails.cache.write(cache_key, result, expires_in: cache_duration)
      result
    rescue Faraday::TooManyRequestsError => e
      raise RateLimitError.new(
        "Yahoo Finance rate limit exceeded",
        details: { status: e.response&.dig(:status) }
      )
    rescue Faraday::Error => e
      raise AuthenticationError, "Failed to authenticate with Yahoo Finance: #{e.message}"
    end

    def request_cookie_and_crumb(authentication_client)
      cookie_response = authentication_client.get("https://fc.yahoo.com")
      if cookie_response.respond_to?(:status) && cookie_response.status == 429
        raise RateLimitError.new(
          "Yahoo Finance rate limit exceeded",
          details: { status: cookie_response.status }
        )
      end

      cookie = extract_cookie(cookie_response)
      cookie_max_age = extract_cookie_max_age(cookie_response)
      raise AuthenticationError, "Failed to obtain Yahoo Finance cookie" if cookie.blank?

      crumb_response = authentication_client.get("#{base_url}/v1/test/getcrumb") do |req|
        req.headers["Cookie"] = cookie
      end

View on GitHub (pinned to e69894adb9)

When it happens

Trigger: Thrown at app/models/provider/yahoo_finance.rb:884 when the library encounters an invalid state.

Common situations: See trigger scenarios.

Understand the failure class

• Authentication and authorization failures — expired tokens, bad credentials, and missing scopes.

AI-assisted analysis of we-promise/sure@e69894adb9 (2026-08-21). Data as JSON: /api/errors/226e1ce5ba82ab03. Report an issue: GitHub.