I followed "Subscriptions in Apollo Server" and "API Reference: expressMiddleware" but my app won't show graphql IDE

[kasir-barati]

Hi I followed the steps written in the doc and IDK why but for some reason I keep getting this unbelievably short and confusing error message in the browser:

req.body is not set; this probably means you forgot to set up the json middleware before the Apollo Server middleware.

Any idea?

Here is my code: https://github.com/kasir-barati/graphql/blob/main/apps/server-statistics/src/main.ts

BTW I am using ExpressJS v5 + Nx and I do not believe that they are the culprit.

Docs I am following:

• https://www.apollographql.com/docs/apollo-server/data/subscriptions#enabling-subscriptions
• https://www.apollographql.com/docs/apollo-server/api/express-middleware
• https://www.apollographql.com/docs/apollo-server/security/cors#specifying-origins

[kasir-barati]

BTW in the link I shared to my repo you can see that I have done it exactly as the doc says and yet it is not working: https://github.com/kasir-barati/graphql/blob/323ad5f75353b7dc148402f97dc7d2430923b7ce/apps/server-statistics/src/main.ts#L55

[kasir-barati]

Wow man, The problem was really express v5.

[glasser]

Makes sense: after all, the line you wrote said:

import { expressMiddleware } from '@apollo/server/express4';

which indicates the one web framework that Apollo Server has built-in support for is Express v4. Apollo Server 4's main design goal is that we provide first-party support for at most one web framework (today, Express v4), which is a change from the unmaintainable AS v2/v3 approach where we provided first-party support for many web frameworks. We encourage the community to publish an Express v5 integration package (it's likely about a page of code, probably very similar to the built-in Express v4 integration). A future major version of AS may switch which web framework we have first-party support for, though certainly we'd want to see Express v5 have more than 1% of the downloads of Express v4 before we consider that as our choice.