Webhook Error with Charge plugin
If CSRF protection is enabled (and it is by default for the latest versions of Craft), Stripe was getting a server error when using the Charge webhook url. The solution is to disable CSRF for the webhook URI - you can read more about it here

or simply add this to your config/general.php file:

'enableCsrfProtection' =&gt; (!isset($_SERVER['REQUEST_URI']) || $_SERVER['REQUEST_URI'] != '/actions/charge/webhook/callback'),