update error

This may be a plugin or theme conflict. Please attempt to disable all plugins, and use one of the default (Twenty*) themes. If the problem goes away, enable them one by one to identify the source of your troubles.

See http://www.wpbeginner.com/plugins/how-to-deactivate-all-plugins-when-not-able-to-access-wp-admin/

As you use a commercial theme and need support, please use their official support channel. We feel they are best equipped to support their products.

https://inkhive.com/premium-theme-support/

Commercial products are not supported in these forums. You are their customer; I am sure they will have no problem supporting you there.