500 error upon saving API key: MailChimp for WooCommerce

[jessiebrown]

Forum post: https://wordpress.org/support/topic/white-screen-of-death-164/#post-8923252

• Theme: Divi Theme

• Active plugins: MailChimp for WooCommerce, OptimizePress, Shortcodes Ultimate, WooCommerce Stripe Gateway, WooCommerce Memberships, WooCommerce Subscriptions, WooCommerce, WooCommerce Helper and Yoast SEO

• WP Version 4.7.3

• PHP version 5.6.30

• What version of WooCommerce MailChimp is installed? Version 1.1.0

• What version of WooCommerce are you running? version 2.6.14

• What MySQL version is installed? MySQL version 5.6.26

• What is your WP memory limit? WP Memory Limit 768 MB

Screenshot of error:
https://cl.ly/2H2I0y2N063u

[khungate-zz]

Forum post shows as resolved