Uncaught (in promise) TypeError: Cannot set property 'visible' of undefined
at Function.AddTurnMaker (nextUp.js:437)
at handleCombatUpdate (nextUp.js:264)
at Function._call (eval at <anonymous> (libWrapper-error_listeners.js:56), <anonymous>:4:14)
at Function.callAll (foundry.js:153)
at ClientDatabaseBackend.callback (foundry.js:8880)
at foundry.js:8819
at Array.map (<anonymous>)
at ClientDatabaseBackend._handleUpdateDocuments (foundry.js:8819)
at ClientDatabaseBackend._updateDocuments (foundry.js:8707)
at async Function.updateDocuments (document.mjs:365)
Throws this error: