Hy

I have an error when creating new mew message from backend 'htmlspecialchars(): Argument #1 ($string) must be of type string, array given'. the error is givin from this field :

email_template:
    label: "initbiz.newsletter::lang.messages.email_template"
    type: dropdown
    span: left
    default: 'initbiz.newsletter::mail.message'

Thanks