FAQ.md

@@ -4,6 +4,8 @@
     * Try using slahes (/) instead of backslahes (\\).
 * **I want to calculate something new with snakemake, but it tells me "nothing to be done".**
     * Snakemake does not recalculate files, which are already there. You must delete the file, which has the name of your desired output.
+* **I get the following error message in the terminal: 'Error: Directory cannot be locked.'**
+    * Execute 'snakemake --unlock --cores all' and retry.
 # Backbone
 * **I do not understand the backbone input data.**
     * There is an explanation video from VTT ([https://gitlab.vtt.fi/backbone/backbone/-/wikis/Getting-started/Input-files](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Getting-started/Input-files), to be found in the section "Understanding Input Data"), and one from the EE (https://ruhr-uni-bochum.sciebo.de/s/4XRKeN0IkYcaGhf, pwd: bbeinfuehrung20, in German).
@@ -60,4 +62,4 @@
 * **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.
 * **`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.
+    * 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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