Mingle theme PHP upgrade to v7.1

I’ve just updated my site to PHP v7.1. I now have two warning messages at the top of the screen.
Warning : Declaration of design_settings_object::init() should be compatible with framework_object_ambassador_1::init($settings) in /home/acegpinc/public_html/wp-content/themes/parallelus-mingle/framework/design-settings/object.php on line 10
The second one is the same but for theme-settings.
I currently have Mingle Version:
How can I disable the warning message?
Thank you


Please contact theme Author and let them know How to Contact your purchased theme Author, theme author will be happy to assist you.