This error message indicates that the exponentiation operation is not defined for Vectors, for example,  $A≔<1\&comma; 2\&comma; 3{\&gt;}^2$ will produce an error. As such, when attempting division such as $\frac{A}{B}$,  Maple does not compute $\frac{A}{B}$  but instead tries to compute ${\mathrm{AB}}^{-1}$. In trying to raise B to the exponent -1, this produces an error.

In the following example, it is not clear whether element-wise division or the creation of a matrix is intended.

Solution:
To apply an operation, you must use the zip or LinearAlgebra[Zip] commands.

For more information on the key data structures in Maple, see the User Manual, Chapter 8 and the help pages for expression sequences, sets, lists, tables, Arrays, Matrices, Vectors, functional operators, and strings.