> ## Documentation Index
> Fetch the complete documentation index at: https://ngrok.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Error 1912

## ERR\_NGROK\_1912

The upload contained `COUNT` certificates: `CNS`. Only a single certificate may be uploaded at a time.

## Further help

If you're having trouble resolving this error, please reach out to [support@ngrok.com](mailto:support@ngrok.com?subject=Help%20with%20ERR_NGROK_1912)