Hello, @Khubaib Khan,
There is a plugin AMP that causes the error. When I disable the plugin the issue resolve your site works just perfectly. I have checked the plugin settings but there is nothing to fix. There must be a third-party plugin which is a conflict with the AMP plugin and causes the critical error issue on mobile. I also checked that you are using the WP Rocket cache plugin on your site with the other cache plugins as well like the “Robin image optimizer” plugin would you please try to check the other third-party plugins by disabling them except the theme necessary plugins which come up with the theme package then check back to your site after clearing the browser cache. your issue will be resolved. Then activate the plugins one by one so that you will be able to know which plugins conflicts and causes the issue. Or you simply disable the AMP plugin and use your site without any issue. The choice is yours now.
Regards 8Themes Team.