解决-215:Assertion failed ) !_src.empty() in function 'cv::cvtColor'(java opencv)

Exception in thread "main" CvException [org.opencv.core.CvException: cv::Exception: OpenCV(4.5.4) C:uildmas
ter_winpack-bindings-win64-vc14-staticopencvmodulesimgprocsrccolor.cpp:182: error: (-215:Assertion failed
) !_src.empty() in function 'cv::cvtColor'
]
    at org.opencv.imgproc.Imgproc.cvtColor_1(Native Method)
    at org.opencv.imgproc.Imgproc.cvtColor(Imgproc.java:7021)
    at reyo.sdk.utils.img.Test.compareHist_2(Test.java:75)
    at reyo.sdk.utils.img.Test.main(Test.java:38)

出现这个问题，一般是路径上面的错误，仔细查看自己输入的图片路径是否正确