Error when Data augmentation removed! Need help

---> 66 y_true[l][b, j, i, k, 0:4] = true_boxes[b,t, 0:4] 67 y_true[l][b, j, i, k, 4] = 1 68 y_true[l][b, j, i, k, 5+c] = 1

IndexError: index 13 is out of bounds for axis 2 with size 13