Custom Connector, OAUTH2 and the Gateway: Credential Missing

[nathanstill]

I have a custom connector using OATH2 that is giving me a "CredentialMissing" error when trying to refresh. What I have tried:

• works perfectly in Power BI
• Implemented TestConnection and the connector shows as a "Data Source Type".
• OATH2 "Edit Credential" process works properly without errors.
• Error shows up when trying to save the "Data Source Settings".

One other observation: Microsoft.Data.Mashup.MashupSecurityException.DataSources in the error appears to be adding in 6 extra slashes into the URL path. I can understand just one (for escape character purposes) but this seems buggy. For example, sourceurl.com/api/endpoint would become sourceurl.com\\\/api\\\/endpoint

Thank you for your help!