Uncaught errors if distribution does not exist

I’m getting uncaught errors leading to 502 errors on menu/post saving when the distribution ID doesn’t exist. Please could you catch these errors in the next version?

In my nginx log I’m getting:

2018/05/31 13:36:14 [error] 18639#18639: *14760 FastCGI sent in stderr: “PHP message: Array
(
[0] => Error executing “CreateInvalidation” on “https://cloudfront.amazonaws.com/2017-10-30/distribution/None/invalidation”; AWS HTTP error: Client error: POST https://cloudfront.amazonaws.com/2017-10-30/distribution/None/invalidation resulted in a 404 Not Found response:
<?xml version=”1.0″?>
<ErrorResponse xmlns=”http://cloudfront.amazonaws.com/doc/2017-10-30/”><Error><Type>Sender</Type>&lt; (truncated…)
NoSuchDistribution (client): The specified distribution does not exist. – <?xml version=”1.0″?>
<ErrorResponse xmlns=”http://cloudfront.amazonaws.com/doc/2017-10-30/”><Error><Type>Sender</Type&gt;NoSuchDistribution<Message>The specified distribution does not exist.</Message></Error><RequestId>9673aed6-64d7-11e8-bdeb-b1d2a6983786</RequestId></ErrorResponse>
)

PHP message: PHP Warning: array_merge(): Argument #1 is not an array in /var/www/domain.com/html/wp-content/plugins/c3-cloudfront-clear-cache/module/model/invalidation.php on line 97
PHP message: PHP Warning: array_unique() expects parameter 1 to be array, null given in /var/www/domain.com/html/wp-content/plugins/c3-cloudfront-clear-cache/module/model/invalidation.php on line 98
PHP message: PHP Warning: array_merge(): Argument #1 is not an array in /var/www/domain.com/html/wp-content/plugins/c3-cloudfront-clear-cache/module/model/invalidation.php on line 98
PHP message: PHP Warning: array_merge(): Argument #1 is not an array in /var/www/domain.com/html/wp-content/plugins/c3-cloudfront-clear-cache/module/model/invalidation.php on line 97
PHP message: PHP Warning: array_unique() expects parameter 1 to be array, null given in /var/www/domain.com/html/wp-content/plugins/c3-cloudfront-clear-cache/module/model/invalidation.php on line 98
PHP message: PHP Warning: array_merge(): Argument #1 is not an array in /var/www/domain.com/html/wp-content/plugins/c3-cloudfront-clear-cache/module/m