Gmail API - The format of value '= Get Labels google-api-dotnet-client/1.25.0.0 (gzip)' is invalid

Question

I started exploring Gmail API. I followed the tutorial to show labels list (https://developers.google.com/gmail/api/quickstart/dotnet), and worked fine.

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Answer 1

This is almost certainly due to the "AppName = Get Labels" application name. Change this to remove the spaces and '=', and I suspect this error will go away.