Merging two images together

I'm trying to merge two images together but it's not working, the images dont get merged at all.

This is my full code, whats happening is:

• first check if report images does exist
• generate image with rectangles and transparent background to place over the original report image
• find report image -merge -download merged image

    public function getCanvas(Request $request, $id, $remake = false)
    {
        $reportImage = SurveyReportImage::with('surveyReportObjects.ObjectDetectionLabel.labelable')->findOrFail($id);

        $filenameRectangles = 'rectangles-' . $id . '.png';
        $basePath = 'img/reportImages';
        $fileDirectory = storage_path('app/public/' . $basePath);
        $fullFilepathRectangles = storage_path('app/public/' . $basePath) . '/' . $filenameRectangles;
        $downloadPathRectangles = '/public/' . $basePath . '/' . $filenameRectangles;

        if (Storage::disk('public')->exists($reportImage->path)) {
            if (!Storage::disk('public')->exists($basePath . '/' . $filenameRectangles) || $remake) {
                //doesn't exist or needs to be rewritten

                if (Storage::disk('public')->exists($basePath . '/' . $filenameRectangles) && $remake) {
                    //remove existing image if being rewritten
                    Storage::disk('public')->delete($basePath . '/' . $filenameRectangles);
                }

                $reportImageFileSize = getimagesize(storage_path('app/public/') . $reportImage->path);
                $image = imagecreate($reportImageFileSize[0], $reportImageFileSize[1]);

                $black = imagecolorallocate($image, 0, 0, 0);
                imagecolortransparent($image, $black);

                //get objects for image
                $objects = $reportImage->surveyReportObjects->groupBy(function ($item) {
                    switch ($item->ObjectDetectionLabel->labelable_type) {
                        case "App\\Pivots\\Tenant\\ProductFrontType":
                            return $item->ObjectDetectionLabel->labelable->product->subBrand->id;
                        case "App\\Pivots\\Tenant\\BrandFrontType":
                            return $item->ObjectDetectionLabel->labelable->brand->id;
                        case "App\\Pivots\\Tenant\\SubBrandFrontType":
                            return $item->ObjectDetectionLabel->labelable->subBrand->id;
                    }
                });

                $colors = $this->getColors($image, $objects->count());

                $objects->each(function ($object) use ($colors, $image) {
                    $colorI = 0;

                    $object->each(function ($item) use ($colors, $image, $colorI) {
                        imagerectangle($image, $item->left, $item->top, $item->left + $item->width, $item->top + $item->height, $colors[$colorI]);
                    });

                    $colorI++;
                });

                $realImageExt = pathinfo($reportImage->path, PATHINFO_EXTENSION);

                $baseLayer = null;

                if ($realImageExt === 'jpg') {
                    $baseLayer = imagecreatefromjpeg(storage_path('app/public/' . $reportImage->path));
                } else if ($realImageExt === 'png') {
                    $baseLayer = imagecreatefrompng(storage_path('app/public/' . $reportImage->path));
                }

                File::ensureDirectoryExists($fileDirectory);

                imagepng($image, $fullFilepathRectangles);

                $topLayer = imagecreatefrompng($fullFilepathRectangles);

                //merge images together
                imagealphablending($topLayer, 1);
                imagealphablending($baseLayer, 1);

                imagecopy(
                    $topLayer,
                    $baseLayer,
                    0,
                    0,
                    0,
                    0,
                    $reportImageFileSize[0],
                    $reportImageFileSize[1]
                );

                imagedestroy($image);

                return Storage::download($downloadPathRectangles);
            }
        } else {
            return response("does not exist.", 404);
        }
    }