@luckychingi thank you for the quick reply. Here is the error message, reformatted a bit:
[Mon Jun 01 00:45:14.946612 2020] [php7:error] [pid 1923] [client x.x.x.x:61427]
PHP Fatal error: Uncaught Error: Class 'Aws\\CloudFront\\CloudFrontClient' not found in
/home/user/public_html/wp/wp-content/plugins/aws-cdn-by-wpadmin/aws-cdn.php:795
Stack trace:
#0 /home/user/public_html/wp/wp-content/plugins/aws-cdn-by-wpadmin/aws-cdn.php(478): wpaawscdn->wpaac_authClient('...', '...')
#1 /home/user/public_html/wp/wp-includes/class-wp-hook.php(287): wpaawscdn->wpaac_deploy_cdn('')
#2 /home/user/public_html/wp/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters('', Array)
#3 /home/user/public_html/wp/wp-includes/plugin.php(478): WP_Hook->do_action(Array)
#4 /home/user/public_html/wp/wp-admin/admin-ajax.php(175): do_action('wp_ajax_wpaac_d...')
#5 {main}
thrown in /home/user/public_html/wp/wp-content/plugins/aws-cdn-by-wpadmin/aws-cdn.php on line 795,
referer: https://mysite.com/wp-admin/admin.php?page=wpa-aws-cloudfront
