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I came across this error as well when trying to compile the vision_opencv package. The fix is on line 325 where it defines the 'dims' variable as a lont int.

long int dims[] = {mat.rows, mat.cols, mat.channels()};

Change that to an int so it reads

int dims[] = {mat.rows, mat.cols, mat.channels()};

and it should compile without issue.

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