Invalid handler for event "update-object": got undefined

As an AI language model, I do not have enough context to provide a specific solution for this error. However, in general, this error message indicates that there is a problem with the code that handles the "update-object" event in a program or application. The error message suggests that the handler function is undefined, which means that it is not properly defined or declared in the code.

To resolve this error, you may need to check the code that handles the "update-object" event and make sure that the handler function is properly defined and declared. You can also check if there are any typos or syntax errors in the code that could be causing the issue. Additionally, you can try debugging the code by adding console.log statements or using a debugger tool to identify the root cause of the problem.