Unhandled Rejection (Error): must be defined

[amaster507 (Anthony Master)]

You have the same problem as the previous post in this correct category. You need to add the variables param. See this answer:

Unhandled Rejection (Error): must be defined new ApolloError

This is not a problem with Dgraph, but with your use of the useMutation return function. deleteProduct({ filter: { id: device.id } }) Should be deleteProduct({ variables: { filter: { id: device.id } } })