oauth-2.0 - 无法访问谷歌应用 api 的 oAuth2

Question

每当我尝试访问时，我都会收到以下错误credential.refreshToken()：

Caused by: com.google.api.client.auth.oauth2.TokenResponseException: 400 Bad Request { "error" : "invalid_grant" }
at com.google.api.client.auth.oauth2.TokenResponseException.from(TokenResponseException.java:>103)
at com.google.api.client.auth.oauth2.TokenRequest.executeUnparsed(TokenRequest.java:303)
at com.google.api.client.auth.oauth2.TokenRequest.execute(TokenRequest.java:323)
at com.google.api.client.googleapis.auth.oauth2.GoogleCredential.executeRefreshToken(GoogleCredential.java:340)
at com.google.api.client.auth.oauth2.Credential.refreshToken(Credential.java:508)
at com.intuit.dmx.storage.google.StorageAuthenticationServiceImpl.authenticateUser(StorageAut>henticationServiceImpl.java:51)
... 2 more

我不是每次都得到这个例外。有时它工作正常，即我可以获得访问令牌，有时它会抛出异常。