die "Missing section [task_server] in config file" unless $lx_office_conf{task_server};
die "Missing key 'login' in section [task_server] in config file" unless $lx_office_conf{task_server}->{login};
die "Missing section [task_server] in config file" unless $lx_office_conf{task_server};
die "Missing key 'login' in section [task_server] in config file" unless $lx_office_conf{task_server}->{login};