c++ error : no matching function for call to - c++

Question

i am a newbie in c++. the source codes are taken from github.com/srsran/srsRAN. i am trying to call a function from a class nas_5g. this class is inside namespace srsue as shown in the header file below.
header file nas_5g.h
#include "srsue/hdr/stack/upper/nas_5g.h"
namespace srsue {
class nas_5g : public nas_base, public nas_5g_interface_rrc_nr, public nas_5g_interface_procedures
{
public:
explicit nas_5g(srslog::basic_logger& logger_, srsran::task_sched_handle task_sched_);
virtual ~nas_5g();
int init(usim_interface_nas* usim_,
rrc_nr_interface_nas_5g* rrc_nr_,
gw_interface_nas* gw_,
const nas_5g_args_t& cfg_);
void stop();
void run_tti();
bool is_registered();
int get_k_amf(srsran::as_key_t& k_amf);
uint32_t get_ul_nas_count();
int write_pdu(srsran::unique_byte_buffer_t pdu);
int switch_off();
}
source file nas_5g.cc
using namespace srsran;
using namespace srsran::nas_5g;
namespace srsue {
nas_5g::nas_5g(srslog::basic_logger& logger_, srsran::task_sched_handle task_sched_) :
nas_base(logger_, MAC_5G_OFFSET, SEQ_5G_OFFSET, NAS_5G_BEARER),
task_sched(task_sched_),
reregistration_timer(task_sched_.get_unique_timer()),
registration_proc(this),
state(logger_),
pdu_session_establishment_proc(this, logger_)
{
// Configure timers
}
nas_5g::~nas_5g() {}
int nas_5g::switch_off()
{
logger.info("Switching off");
send_deregistration_request_ue_originating(true);
return SRSRAN_SUCCESS;
}
i tried to define the object and call function switch_off() in the main.cc file as shown below
main.cc
#include "srsue/hdr/stack/upper/nas_5g.h"
using namespace srsue;
int main(int argc, char* argv[])
{
srsue::nas_5g nas5g;
nas5g.switch_off();
}
when compiling the source codes, i received below error:-
/srsRAN/srsue/src/main.cc: In function ‘int main(int, char**)’:
/srsRAN/srsue/src/main.cc:823:17: error: no matching function for call to ‘srsue::nas_5g::nas_5g()’
823 | srsue::nas_5g nas5g;
| ^~~~~
In file included from /srsRAN/srsue/src/main.cc:50:
/srsRAN/srsue/hdr/stack/upper/nas_5g.h:59:12: note: candidate: ‘srsue::nas_5g::nas_5g(srslog::basic_logger&, srsran::task_sched_handle)’
59 | explicit nas_5g(srslog::basic_logger& logger_, srsran::task_sched_handle task_sched_);
| ^~~~~~
/srsRAN/srsue/hdr/stack/upper/nas_5g.h:59:12: note: candidate expects 2 arguments, 0 provided
make[2]: *** [srsue/src/CMakeFiles/srsue.dir/build.make:63: srsue/src/CMakeFiles/srsue.dir/main.cc.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:11439: srsue/src/CMakeFiles/srsue.dir/all] Error 2
make: *** [Makefile:163: all] Error 2
appreciate if anyone could shed some light. thanks in advance!