How do I deal with connection RESET on browsers when loading assets?

This occurs when someone is loading my game via the lime.embed(‘open-fl-content’). I’m loading a load of json files and it isn’t happy about it it seems.

http://www.ronnietherooster.com/assets/data/waves/87.json?160020 Failed to load resource: net::ERR_CONNECTION_RESET
http://www.ronnietherooster.com/assets/data/waves/88.json?160020 Failed to load resource: net::ERR_CONNECTION_RESET
http://www.ronnietherooster.com/assets/data/waves/89.json?160020 Failed to load resource: net::ERR_CONNECTION_RESET
http://www.ronnietherooster.com/assets/data/waves/9.json?160020 Failed to load resource: net::ERR_CONNECTION_RESET
http://www.ronnietherooster.com/assets/data/waves/90.json?160020 Failed to load resource: net::ERR_CONNECTION_RESET
http://www.ronnietherooster.com/assets/data/waves/91.json?160020 Failed to load resource: net::ERR_CONNECTION_RESET

When I try to visit directly, it says the page is not found. Are you sure the files have all been uploaded? Does the server need to be configured differently to allow *.json files?