apollo-server-express 2.11 + graphql 15.0 = error: Must provide Source. Received: undefined.

[NGPixel]

Upon upgrading the graphql package to 15.0.0, the package apollo-server-express throws an error as soon as it's being included. Reverting back to 14.6.0 fixes the issue.

 error: Must provide Source. Received: undefined.

Steps to reproduce:

• Install latest apollo-server-express package (2.11.0)
• Install latest graphql package (15.0.0)
• Run sample code (index.js):

const apollo = require('apollo-server-express')

• Process will crash immediately with above error.

[Vultraz]

Also encountered this. It seems apollo-server-express (and by extension, apollo-server-core rely on a slightly outdated version of graphql-tools: graphql/graphql-js#2503 (4.0.0). Forcing resolution for graphql-tools": ^4.0.6 should work, I think.

[Glen-Moonpig]

Same issue with apollo-server-lambda 2.13.0 + graphql 15.0.0

[clok]

Also seen with apollo-server-hapi and graphql v15. Has to drop down to graphql v14 latest.

[Vultraz]

Really hope they fix this for server v3 at least.

[prabhuignoto]

having the same issue. downgrading to graphql@14 seems to solve the issue

[lolgesten]

Still the same in apollo-server 2.16.1.

We get multiple graphql versions cause @types/graphql-upload@8.0.3 drags in graphql@14.

The double graphql version problem were also found here graphql/graphql-js#2503

$ npm ls graphql
lookback@0.0.1 /Users/martin/dev/lk/server
├─┬ apollo-server@2.16.1
│ └─┬ apollo-server-core@2.16.1
│   └─┬ @types/graphql-upload@8.0.3
│     └── graphql@14.7.0 
└── graphql@15.3.0 

[sannamar]

This is still an issue with apollo-server 2.19.2.

Running npm ls graphql outputs the following:

├─┬ apollo-server@2.19.2
│ └─┬ apollo-server-core@2.19.2
│   └─┬ @types/graphql-upload@8.0.3
│     └── graphql@14.7.0
└── UNMET PEER DEPENDENCY graphql@15.5.0

[glasser]

I'm going to close this as duplicate of #4865 but I'll make sure to note that it might be slightly different than just a peer dep issue.

[glasser]

Apollo Server v2.21.0 will fix this. I published alpha packages with version v2.21.0-alpha.0. I'd love some folks to try the alpha and let me know if it works for you! Both folks who actually use the upload feature and those who don't! It's currently in the release-2.21.0 branch, being tracked at #4922