Additionally, now when I attempt to access the Save Contact Form 7, instead of the loading screen looping indefinitely, I get a JavaScript alert which reads:
DataTables warning: table id=nimble_table_data – Ajax error. for more information about this error, please see https://datatables.net/tn/7
And it seems to be triggered by an attempted POST action to /wp-admin/admin-ajax.php returning a 500 (Internal Server Error) message due to a call from load_scripts.php:4