Problems with multiple Data Tables

I get this error when navigating to any of my three data tables: jquery3.js:2 [Deprecation] Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user’s experience. For more help, check

How are you getting the data for your table?

An Ajax call. It worked originally with one data table but has been giving me this error when I have added more

What does the code look like?