No process by attachment shall issue on behalf of any creditor of the assignor after such assignment has been duly made, as in this chapter contemplated, until a court of competent jurisdiction shall have first pronounced the assignment void, ab initio by proper suit or action brought by one or more creditors for that purpose, in which case, after the bill is filed and proper service is had, the court, or judge in vacation, shall fix the time for making up the issues, and render a final decree as soon as practicable.