FAQ.md

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     * Make sure that correct interpreter is active (pypsa-eur interpreter path on the bottom left in Visual Studio Code (e.g. “Python 3.7.7 64-bit (‘pypsa-eur’: conda)”))
 * **I have changed the PATH but Visual Studio Code does not seem to recognise this change.**
     * Visual Studio Code has to be closed and started again in order to recognise a change in the PATH.
+
+# Common PyPSA Error messages
 *  **`KeyError` when executing PyPSA_to_Backbone?**
     * Check whether the storage technologies in the config.yaml of pypsa-eur are written in "StorageUnit". If they are written in "Stores", a KeyError is thrown. 
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