Vue.js: "onShow" Error - Cannot Read Property 'open' of Undefined

This warning message indicates an error during the execution of the 'onShow' event in a Vue component. Specifically, it's trying to access the 'open' property of an undefined object.

To fix this, you need to examine the code in the 'onShow' event and find out why the accessed object is undefined. It could be that the object is not properly initialized or assigned a value before the 'onShow' event is triggered.

Once you pinpoint the issue, update your code to ensure the object is defined correctly and has the 'open' property before attempting to access it.