Trying to serve a static TwiML response from an n8n Webhook using “Respond Immediately” (method: POST, header: Content-Type: text/xml, XML pasted in Response Data). When I access the URL in browser, XML is rendered correctly. But Twilio returns error 12100 (“Document parse failure”) when calling this TwiML URL. How should I structure the response in n8n to make Twilio accept it?
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