You're attempting to add a credit card, but you're receiving an error when saving your card details.
Disable the following items while you update your card, as they may be interfering with the credit card form in your Heroku Dashboard.
- Extensions or developer tools
- Browser plug-ins
- Ad-blocker software
- Antivirus software
- Corporate network / VPNs
If you still encounter an issue, please create a ticket and we'll be happy to take a closer look at your issue.