fds in sdk14

[Stas]

I'm trying to migrate my old app based on buttonless app sdk13 to buttonless app sdk14. I solved issuie according to migrate guide remove chunk things and etc. My app works well until I add fds_init function in my main.c file.
Here's my fds_test_init function

ret_code_t fds_test_init (void)
{
		
		ret_code_t ret = fds_register(fds_evt_handler);
		if (ret != FDS_SUCCESS)
		{
					return ret;
		}
		ret = fds_init();
		if (ret != FDS_SUCCESS)
		{
				return ret;
		}
		return NRF_SUCCESS;
		}

After I comment calling of that function in my main.c the app starts work. After comment again not working. I see nothing in RTT terminal

The same code works well with sdk13

[Stas]

As I understand program doesn't return any fds event handler because I try to set breakpoints on different raws inside fds_evt_handler function but the program doesn't stop there. Also I've tried to add SEGGER function for detecting no works too.

void fds_evt_handler(fds_evt_t const * const p_fds_evt)
{
    switch (p_fds_evt->id)
    {
			SEGGER_RTT_printf(0, "handler\n\r");
        case FDS_EVT_INIT:
            if (p_fds_evt->result != FDS_SUCCESS)
            {
							 SEGGER_RTT_printf(0, "failed\n\r");
                // Initialization failed.
            }
            break;
				case FDS_EVT_WRITE:
						if (p_fds_evt->result == FDS_SUCCESS)
						{
							write_flag=1;
						}
						break;
						
				case FDS_EVT_DEL_RECORD:
						if (p_fds_evt->result == FDS_SUCCESS)
						{
							delete_flag=1;
						//	SEGGER_RTT_printf(0, "del\n\r");
						}
						break;
        default:
            break;
    }
}