Fail when connect Lime SDR mini (Ubuntu 16.04)

#1

I connect Lime SDR Mini with Ubuntu 16.04 with the following code:
#include <SoapySDR/Device.h>
#include <SoapySDR/Formats.h>
#include <stdio.h> //printf
#include <stdlib.h> //free
#include <complex.h>
int main(void)
{
SoapySDRKwargs args = {};
SoapySDRKwargs_set(&args, “driver”, “lime”);
SoapySDRDevice *sdr = SoapySDRDevice_make(&args);
SoapySDRKwargs_clear(&args);

if (sdr == NULL)
{
    printf("SoapySDRDevice_make fail: %s\n", SoapySDRDevice_lastError());
    return EXIT_FAILURE;
}
else
{
printf("Connected LimeSDR USB\nHihi :D\n");
}

}
It displays an error : "

[ERROR] setBandwidth(Rx, 1, 30 MHz) Failed - "
Can you help me ?