fixed misleading error message on call of query_page without arguments
fixed misleading error message on call of query_page without arguments

coders4help/lagesonum,coders4help/lagesonum,christophmeissner/lagesonum,christophmeissner/lagesonum,fzesch/lagesonum,fzesch/lagesonum,coders4help/lagesonum,fzesch/lagesonum