We are having this issue now. I have read elsewhere in this forum that this can happen when Constant Contact is unreachable, but really, this plugin should not crash an entire web site in this situation. It should fail gracefully. Is there a fix on the way? We have the plugin disabled in the mean time.
PHP Fatal error: Call to a member function getBody() on null in /home/villageshoes/public_html/wp-content/plugins/constant-contact-api/vendor/constantcontact/constantcontact/src/Ctct/Services/BaseService.php on line 105