OpenCV Error: Assertion failed (isIdentity(expr)) in _InputArray, file /home/XXX/Music/opencv-3.4.16/modules/core/src/matrix_expressions.cpp, line 1843 terminate called after throwing an instance of 'cv::Exception' what(): /home/XXX/Music/opencv-3.4.16/modules/core/src/matrix_expressions.cpp:1843: error: (-215) isIdentity(expr) in function _InputArray

[zengwen2017]

使用ros melodic版本，在anaconda3环境中运行，opencv本地和conda中都是3.4.16。运行程序，grab好之后，一点击calibrate就强行退出，报出如下错误：
OpenCV Error: Assertion failed (isIdentity(expr)) in _InputArray, file /home/XXX/Music/opencv-3.4.16/modules/core/src/matrix_expressions.cpp, line 1843
terminate called after throwing an instance of 'cv::Exception'
what(): /home/XXX/Music/opencv-3.4.16/modules/core/src/matrix_expressions.cpp:1843: error: (-215) isIdentity(expr) in function _InputArray。

请问要怎么解决啊