OpenCV Error: Assertion failed (!_src.empty()) in GaussianBlur，

CLION调用opencv库报错：OpenCV: terminate handler is called! The last OpenCV error is:
OpenCV Error: Assertion failed (!_src.empty()) in GaussianBlur, file D:\CPPair\opencv\opencv3\sources\modu
les\imgproc\src\smooth.dispatch.cpp, line 617

// OPENCV源代码：
void GaussianBlur(InputArray _src, OutputArray _dst, Size ksize,
                  double sigma1, double sigma2,
                  int borderType)
{
    CV_INSTRUMENT_REGION();

    CV_Assert(!_src.empty());            // 617行报错位置

    int type = _src.type();
    Size size = _src.size();
    _dst.create( size, type );

    if( (borderType & ~BORDER_ISOLATED) != BORDER_CONSTANT &&
        ((borderType & BORDER_ISOLATED) != 0 || !_src.getMat().isSubmatrix()) )
    {
        if( size.height == 1 )
            ksize.height = 1;
        if( size.width == 1 )
            ksize.width = 1;
    }

    if( ksize.width == 1 && ksize.height == 1 )
    {
        _src.copyTo(_dst);
        return;
    }

检查一下你调用高斯滤波的图片不能为空