You can make XAMPP production ready if you know what you are doing, but as you are asking about making folders readable on your setup, I will assume that you do not have the knowledge to make XAMPP secure enough for a production environment.
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Provide your LS version and where it is installed (own server, uni/employer, SaaS hosting, etc.).
Always provide a LSS file (not LSQ or LSG).
Note: I answer at this forum in my spare time, I'm not a LimeSurvey GmbH employee.