Eigen Library Error: Size Mismatch in Binary Operation

This error message indicates that there is a size mismatch between the left-hand side (Lhs) and right-hand side (Rhs) matrices in a binary operation performed using Eigen library.

Specifically, the error message states that the number of rows and columns of Lhs and Rhs matrices do not match. The assertion aLhs.rows() == aRhs.rows() && aLhs.cols() == aRhs.cols() failed, meaning that the number of rows and columns of the Lhs matrix is different from that of the Rhs matrix.

To resolve this error, you need to ensure that the Lhs and Rhs matrices have the same number of rows and columns before performing the binary operation. You can use the rows() and cols() methods of Eigen matrices to check their dimensions and modify them if necessary.