MySQL syntax-error in nested loop block. Can't find the error. -

i tried code simple nested loop mysql block. server got me syntax error, can't find it.

does see it?

the error message was: query: end loop get_invoice

error code: 1064 have error in sql syntax; check manual corresponds mysql server version right syntax use near 'end loop get_invoice' @ line 1

 begin          declare v_id int default 0;         declare v_finished1 int default 0;     declare invoices_cursor cursor          select id_invoice invoice invoice_type = 're' , exists (select 1 invoice ma invoice_type = 'ma' , ma.origin = i.id_invoice);             declare continue handler          not found set v_finished1 = 1;     open invoices_cursor;     get_invoice: loop         fetch invoices_cursor v_id;          if v_finished1 = 1                       close invoices_cursor;             leave get_invoice;         end if;           declare v_finished2 int default 0;         declare v_dunning_level int default 1;                       declare dunning_cursor cursor              select id_invoice invoice ma invoice_type = 'ma' , ma.origin = v_id order `create` asc;              declare continue handler          not found set v_finished2 = 1;                       open dunning_cursor;         get_dunnings: loop             declare v_id_dun bigint default null;                                    fetch dunning_cursor v_id_dun;                      if v_finished = 1                  leave get_dunnings;             end if;                   update invoice set dunning_level = v_dunning_level invoice_type = 'ma' , id_invoice = v_id_dun;             set v_dunning_level = v_dunning_level + 1;                               end loop get_dunnings ;         close dunning_cursor;      end loop get_invoice ; end;