OpenCV(4.5.3) color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function 'cv::cvtColor'

前面加了一个resize函数，原本没问题的代码就瞬间有问题了
错误代码:error: OpenCV(4.5.3) C:\Users\runneradmin\AppData\Local\Temp\pip-req-build-c2l3r8zm\opencv\modules\imgproc\src\color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function 'cv::cvtColor'

resizeone函数是没截全还是没写全，没返回image啊！导致后面cvtcolor断言失败Assertion failed) !_src.empty() in function 'cv::cvtColor'。图像已经空了。有帮助请采纳谢谢！