Hi, @Giammi
Sorry for the delay. The engineering team checked the issue and made an update to the module yesterday.
If you install the latest version with npm install @smartthings/file-context-store, it should work (I did some tests myself and it looks good).
However, something to consider is that this module is only an example you can base on for your implementation. In case you want to pursue the usage of a module like this, we encourage you to create your own so you have control over changes needed in the future.