[Bug]: Cannot read properties of undefined (reading 'splice')

[janechu]

What happened?

When an array item is added and the delete button is clicked it creates this error.

What package(s) are causing the problem?

design-to-code

What browsers are you seeing the problem on?

No response

Relevant log output

Uncaught TypeError: Cannot read properties of undefined (reading 'splice')
    at In.<computed>.<computed>.data.sourceDataLocation (message-system.min.worker.js:1:21439)