c# - OData.Simple.Client Linking "Attempt to access the method failed." -

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i trying link entries using odata.simple.client

    public async task addgenresasnyc(int userid, list<genre> genres)     {         await client.for<user>.key(userid).linkentryasync(x => x.genres, genres);     }

this method using in order it. when run it throws exception

"attempt access method failed."

anyone have idea?


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