You refile your petition and related papers and have them served on your husband. Yes I know you don't know where he is so have them served on him at his last known address. If that doesn't work because no one at that address knows him you can ask the Court to order alternative forms of service, like service by publication in a newspaper. Once he's served and doesn't respond you take his default and the hard part is over.
A weekly guide with tips and legal advice for each stage of the process.