It's working! YES!f you want help, you have to actually ANSWER the questions people are asking you. Otherwise you're doomed to be running in circles looking for different plugins because you find it "too hard" to troubleshoot the issues you're having. Being able to work through a problem step by step is a core skill with game development, so you better start practising.
A very quick look at the plugin, and my question is, did you have older save files, and then installed this plugin? You may need to delete all the older saves, as this plugin may be expecting data that wasn't present when you made them, and it can't display those saves
that is because most plugins change the savefile structure, so adding or removing a plugin (or even changing their order) has a high chance of making older savefiles incompatible.I really don't understand why the save file has a problem