ERR_NGROK_SHIP_INTEGRATION_CREDENTIAL_REFERENCE_UNSUPPORTED: Provider PROVIDERID needs COUNT credential values (FIELDS) - ngrok documentation

What does ERR_NGROK_SHIP_INTEGRATION_CREDENTIAL_REFERENCE_UNSUPPORTED mean?

ngrok returns ERR_NGROK_SHIP_INTEGRATION_CREDENTIAL_REFERENCE_UNSUPPORTED with this message:

Provider <PROVIDERID> needs <COUNT> credential values (<FIELDS>). A 'static_token_reference' holds one. Send them in 'static_token_value'.

Where can I get more help with ERR_NGROK_SHIP_INTEGRATION_CREDENTIAL_REFERENCE_UNSUPPORTED?

Email support@ngrok.com and include the error code.