I tried turning everything off but Eli Book, Dynamic Parameters and Custom Parameters and still got the error, though other parts of the log changed. Is there a minimum engine version number for the plugins to function?
Itch isn't letting me send a screenshot for some reason (I had this problem initially when I tried to send screenshots in the original comment and I don't remember what I did to fix it), so I copied the text from the log instead.
rmmz_managers.js:2036 TypeError: Cannot read property 'param' of undefined
at Object.setMetaDynamicParams (EliMZ_DynamicParameters.js:494)
at Object.setBaseDynamicParams (EliMZ_DynamicParameters.js:486)
at Scene_Boot.processDataStates (EliMZ_DynamicParameters.js:529)
at Scene_Boot.processDatabaseNotesAndMetas (EliMZ_Book.js:1982)
at Scene_Boot.onDatabaseLoaded (EliMZ_Book.js:1953)
at Scene_Boot.isReady (rmmz_scenes.js:280)
at Function.SceneManager.updateScene (rmmz_managers.js:2105)
at Function.SceneManager.updateMain (rmmz_managers.js:2063)
at Function.SceneManager.update (rmmz_managers.js:1942)
at Function.Graphics._onTick (rmmz_core.js:811)