react-hook-form: useFieldArray: TypeError: data.slice is not a function

Describe the bug All multiple elements (useFieldArray) and remove them, the first work, but the second click leads to the following error message:

TypeError: data.slice is not a function
removeAt
node_modules/react-hook-form/dist/react-hook-form.es.js:1438

To Reproduce Steps to reproduce the behavior:

1. Create a form with useFieldArray
2. append({})
3. append({})
4. remove(1)
5. remove(0)

https://codesandbox.io/s/react-hook-form-usefieldarray-1qmyt https://github.com/chubbyphp/petstore-react/blob/tailwind-css/src/Component/Form/PetForm.tsx

Expected behavior Element gets removed without any issue.

Desktop (please complete the following information):

• OS Ubuntu 19.10
• Browser Firefox
• Version 74