i am using apollo-link-rest to perform a POST /login with formdata i a react app, and getting a userobject back if successful login. But the cache does not place the returned json in the apolloclient cache, it adds the user object and all the fields, but all values are null

i have posted a stack overflow question https://stackoverflow.com/questions/62861231/apolloclient-all-values-result-to-null-in-cache-when-performing-a-mutation