Sometimes the SSL cert fails silently. Add:
```php
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
```
But only for testing! Disabling SSL checks in prod is a bad idea.
```php
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
```
But only for testing! Disabling SSL checks in prod is a bad idea.
