In the screenshot the image is not loading that is if you have one as background if not change the background color or text color.
You should load your files without the http/https like so src="//maps.google.com…
Also I see you use the google map without and api key which is a requirement already to use.
TypeError $.slider is not a function - it should be fixed if the files will load properly also it’s better to check if the plugin exists:
You can read more about this error here. How do you open your html template on a live server or localhost/static? Also you can ask the reviewer to give your more information on how he opens your pages, what browser etc.