Setting unknown property error save form with error message

[maximilian-schwarz]

Description

If i want to save a new form with a custom error message i got the following error:
{"error":"Setting unknown property: verbb\\formie\\fields\\formfields\\Name::firstNameErrorMessage"}

Steps to reproduce

1. Edit form
2. Add customer error message for example (Stenciles -> Contact form)
3. Save Form

Additional info

• Plugin version: 1.0.2
• Craft version: 3.4.28.1

[engram-design]

Fixed in 1.0.3