PHP Fatal Error when api call fails

When I try to edit a post, I get a fatal error, and the page fails to reload.

The error occurs when this plugin tries to call the cloudflare api, “WORDPRESS ERROR : sslread() return error -9806”. I’m not worried about that error, instead I think the error handling in this plugin can be improved.

Here’s what I see in debug.log:
PHP Fatal error: Cannot use object of type WP_Error as array in wp-content/plugins/cloudflare-cache-purge/lib/ccpurge.class.php on line 95

And the relevant code, with some comments added from me:

function make_api_request($api_method, $extra_post_variables = null){

	//REMOVED FOR READABILITY

	if( is_wp_error( $results ) ){
		ccpurge_transaction_logging(print_r($results->get_error_message(), true), 'Wordpress Error');
		//seems like we want a return statement here, or better detection in the next if statement when the $results object doesn't have a 'response' key
	}

	if($results['response']['code'] != '200'){
		ccpurge_transaction_logging(print_r($results, true), 'error');
	}

	return json_decode($results['body']);
}

https://www.ads-software.com/plugins/cloudflare-cache-purge/