ApolloError: this.cache.batch is not a function

Question

trying some auth mutation over Apollo/client 3.4.1 and i have this error :

ApolloError: this.cache.batch is not a function
    at new ApolloError (/var/task/node_modules/@apollo/client/errors/errors.cjs.js:35:28)
    at Object.error (/var/task/node_modules/@apollo/client/core/core.cjs.js:1073:90)
    at notifySubscription (/var/task/node_modules/zen-observable/lib/Observable.js:140:18)
    at onNotify (/var/task/node_modules/zen-observable/lib/Observable.js:179:3)
    at SubscriptionObserver.error (/var/task/node_modules/zen-observable/lib/Observable.js:240:7)
    at /var/task/node_modules/@apollo/client/utilities/utilities.cjs.js:1015:40
    at processTicksAndRejections (internal/process/task_queues.js:95:5) {
  graphQLErrors: [],
  clientErrors: [],
  networkError: TypeError: this.cache.batch is not a function
      at QueryManager.refetchQueries (/var/task/node_modules/@apollo/client/core/core.cjs.js:1601:24)
      at QueryManager.markMutationResult (/var/task/node_modules/@apollo/client/core/core.cjs.js:1136:18)
      at /var/task/node_modules/@apollo/client/core/core.cjs.js:1043:49
      at both (/var/task/node_modules/@apollo/client/utilities/utilities.cjs.js:1004:53)
      at /var/task/node_modules/@apollo/client/utilities/utilities.cjs.js:997:72
      at new Promise (<anonymous>)
      at Object.then (/var/task/node_modules/@apollo/client/utilities/utilities.cjs.js:997:24)
      at Object.next (/var/task/node_modules/@apollo/client/utilities/utilities.cjs.js:1005:49)
      at notifySubscription (/var/task/node_modules/zen-observable/lib/Observable.js:135:18)
      at onNotify (/var/task/node_modules/zen-observable/lib/Observable.js:179:3),
  extraInfo: undefined
}

Answer 1

This issue is related to the deprecated cacher class.

If you are using some cacher class just make sure it's up to date. Since Apollo v3 the InMemoryCacher class is provided by @apollo/client so make sure you are importing it from this package.

More on this issue, https://github.com/apollographql/apollo-client/issues/8566 https://www.apollographql.com/docs/react/caching/cache-configuration/