OpenCv C++: Image Not Warping Correctly - c++

Question

I am learning how to stitch two images together using the below link but whatever I do to calculate the homography and warpPerspective, two images won't stitch together.
https://learnopencv.com/feature-based-image-alignment-using-opencv-c-python/
Below is the source code for image stitching
Include Section
#include <opencv2/features2d.hpp>
#include <opencv2/imgcodecs.hpp>
#include <opencv2/opencv.hpp>
#include <opencv2/core/types.hpp>
#include <opencv2/calib3d/calib3d.hpp>
#include <vector>
#include <iostream>
Global Variables
using namespace std;
using namespace cv;
const float inlier_threshold = 2.5f; // Distance threshold to identify inliers
const float nn_match_ratio = 0.8f; // Nearest neighbor matching ratio
Main Function
int main(void)
{
puts("opening");
Mat img1 = imread("uttower_right.jpg", IMREAD_GRAYSCALE); // To be Aligned
Mat img2 = imread("large2_uttower_left.jpg", IMREAD_GRAYSCALE); // Reference
Mat img3 = Mat(img2.rows, img2.cols, CV_8UC1);
//img2.copyTo(img3);
Mat homography;
vector<KeyPoint> kpts1, kpts2;
Mat desc1, desc2;
puts("Have opened");
Ptr<AKAZE> akaze = AKAZE::create();
akaze->detectAndCompute(img1, noArray(), kpts1, desc1);
akaze->detectAndCompute(img2, noArray(), kpts2, desc2);
puts("have commputed akaze");
BFMatcher matcher(NORM_HAMMING);
vector< vector<DMatch> > nn_matches;
matcher.knnMatch(desc1, desc2, nn_matches, 2);
puts("Have done match");
vector<KeyPoint> matched1, matched2;
vector<Point2f> inliers1, inliers2;
for (size_t i = 0; i < nn_matches.size(); i++) {
DMatch first = nn_matches[i][0];
float dist1 = nn_matches[i][0].distance;
float dist2 = nn_matches[i][1].distance;
if (dist1 < nn_match_ratio * dist2) {
matched1.push_back(kpts1[first.queryIdx]);
matched2.push_back(kpts2[first.trainIdx]);
inliers1.push_back(kpts1[first.queryIdx].pt);
inliers2.push_back(kpts1[first.trainIdx].pt);
}
}
printf("Matches %d %d\n", matched1.size(), matched2.size());
homography = findHomography(inliers1, inliers2, RANSAC);
warpPerspective(img1, img3, homography, img2.size());
//Display input and output
imshow("Input1", img1);
imshow("Input2", img2);
imshow("Input3", img3);
waitKey(0);
return 0;
}
Images used