The 'odata.nextLink' instance or property annotation has a null value. In OData, the 'odata.nextLink' instance or property annotation must have a non-null string value.

Question

Hi Team,

I have this legacy code that used to send emails on behalf a user using the graph service. It is used to work several days ago.

await graphServiceClient.Users[FromUserEmail].SendMail(message, true).Request().PostAsync();

but now i am getting the below error

Code: RequestBodyRead Message: The 'odata.nextLink' instance or property annotation has a null value. In OData, the 'odata.nextLink' instance or property annotation must have a non-null string value. ClientRequestId: 43775d15-e67a-4ea2-a520-d6b02002bfe4

Could you please suggest me how to resolve this issue.

Thanks

Answer 1

Hello Jagadeesh Punjala (Launch Consulting),

Thanks for posting.

The above error message suggests that the problem is related to the OData response from graph API which is being used to send email on behalf of user. The oData.nextLink annotation is used by Graph API to provide pagination when returning a large set of results. There could be an issue with the way the oData.nextLink is being handled in the version of the API that you are using. Please ensure that you are using a stable version.

There could be a possibility that updating the NuGet packages in your app could cause this error. Updating a NuGet package replaces older version of package with a new version. New version may contain changes/improvements to the package's functionality or behavior, including changes to the way that the package interacts with other components in your app. In this case, trying to roll back to previous version of NuGet package may solve the issue.

Hope this helps.

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