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Reference to nested variable ''{0}'' is undefined

Detects instances where nested variables in `.env` files are accessed without being defined or initialized elsewhere within the project's scope. It ensures proper handling of undefined nested variables to prevent misconfigurations or runtime errors.

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

UndefinedNestedVariableInspection
Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | DotEnv

Inspection ID: UndefinedNestedVariableInspection

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

//noinspection UndefinedNestedVariableInspection

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

Inspection Details

By default bundled with:

PyCharm 2025.2, Qodana for Ruby 2025.2, RubyMine 2025.2,

Last modified: 18 September 2025