Hi, these warnings are pretty much exactly what the text says, it can't read your Discover On Win parameter for the fights listed. The Discover On Win parameter was added to fights, allowing you to have a win against one troop automatically discover another troop to battle against.
Your fight parameters are missing this new parameter since you updated from a previous version and did not load each fight parameter to let any new parameters load their default values. You can load each Fight parameter you have set up to let it load the default value for this new parameter (should be an empty array), and then the warning will go away.
If you are not using this feature, the plugin will work as normal, but probably best practice is to let the default values load so you aren't getting all these warnings in the console.