Updated lines 44-48 with: [notation] st.write('Reshaping 3-Dimensional array into 4-Dimensional array not possible.') st.write('Reshape an array of size 56250000 into a shape of (1,1,50,50)') st.write('not possible because the total number of elements in the array (56250000)') st.write('does not match the product of the new shape's dimensions (1150*50 = 5000).') st.write('Adding a new dimension obverse np.expand_dims not reshape.')