This thread is resolved. Here is a description of the problem and solution.
Problem: Notices related to esc_sql() after updating to WordPress 4.8.3 Solution: Updating to the fixed version - WPML 3.8.4 Relevant Documentation: https://make.wordpress.org/core/2017/10/31/changed-behaviour-of-esc_sql-in-wordpress-4-8-3/
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