Error Log filling up with Invalid Arguments

@vfontj That notice is coming from here:
https://github.com/woocommerce/woocommerce/blob/3.4.3/includes/wc-notice-functions.php#L132

Two lines before that is where the $notice_type variable is set as an array, and there is a filter available woocommerce_notice_types. Chances are that either another plugin or your theme is using that filter and causing an error so the array is not being returned correctly there.

We suggest the steps at the below link to isolate the plugin or theme that may be causing the issue:
https://docs.woocommerce.com/document/woocommerce-self-service-guide/#section-4

This is resolved. Thanks for the guidance. There was a theme template returning false for $notice_type instead of an empty array.