JA Masthead implode(): Argument #1 ($array) must be of type array, string

when I'm trying to manage JA Masthead in administrador, I get
implode(): Argument #1 ($array) must be of type array, string given

can you help me ?
thanks a lot

You have to update JA Masthead, latest version is 1.2.2
You can do it via JA Extension Manager
Or downloading the extension and updating manually

thanks a lot , it's works perfect now :-)