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Learn how to diagnose and fix 'Undefined' environment variables in Insomnia. This guide covers interpolation failures, JSON syntax checks, and environment hierarchy resolution.
Insomnia utilizes a template-based system to inject environment variables into request headers using double-curly brace syntax. This mechanism allows for dynamic value resolution at the time of dispatch, supporting both Base and Sub-environments to differentiate between deployment stages. A specific design consideration arises when dealing with empty or unde
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