Error Customize Theme Page

When click on customize Theme, my website broken. I’ve install the plugin Amazon AWS CDN and Divi Theme.

Here error log:

[Tue Mar 10 15:49:12.785822 2020] [proxy_fcgi:error] [pid 16757:tid 140110968227584] [client xxxxxxxx:40610] AH01071: Got error ‘PHP message: PHP Recoverable fatal error: Object of class stdClass could not be converted to string in /var/www/vhosts/xxxxxxxxx/httpdocs/wp-content/plugins/aws-cdn-by-wpadmin/aws-cdn.php on line 672\n’, referer: https://xxxxxxxxx/wp-admin/admin.php?page=wpa-aws-cloudfront