# Lift-Off II: Resolvers - Error with datasource-rest

**URL:** <https://community.apollographql.com/t/lift-off-ii-resolvers-error-with-datasource-rest/6334>\
**Category:** Other Apollo Topics\
**Tags:** odyssey\
**Created:** [June 5, 2023, 4:38pm UTC](https://community.apollographql.com/t/lift-off-ii-resolvers-error-with-datasource-rest/6334 "2023-06-05T16:38:54Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![nkekre](https://sea1.discourse-cdn.com/flex019/user_avatar/community.apollographql.com/nkekre/32/2495_2.png) [@nkekre](https://community.apollographql.com/u/nkekre)\
**Post date:** [June 5, 2023, 4:38pm UTC](https://community.apollographql.com/t/lift-off-ii-resolvers-error-with-datasource-rest/6334/1 "2023-06-05T16:38:54Z")

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```auto
npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR! 
npm ERR! While resolving: catstronauts-server@1.0.0
npm ERR! Found: graphql@15.8.0
npm ERR! node_modules/graphql
npm ERR! graphql@"^15.5.1" from the root project
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! peer graphql@"^16.5.0" from @apollo/datasource-rest@6.0.0
npm ERR! node_modules/@apollo/datasource-rest
npm ERR! @apollo/datasource-rest@"*" from the root project
npm ERR! 
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.

```

Running this command `npm install @apollo/datasource-rest` but getting the above error

---

<div class="post-metadata">

**Author:** ![lizhennessy](https://sea1.discourse-cdn.com/flex019/user_avatar/community.apollographql.com/lizhennessy/32/3894_2.png) [@lizhennessy](https://community.apollographql.com/u/lizhennessy)\
**Post date:** [June 5, 2023, 4:48pm UTC](https://community.apollographql.com/t/lift-off-ii-resolvers-error-with-datasource-rest/6334/2 "2023-06-05T16:48:52Z")

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Hi there @nkekre ! I’m happy to help you troubleshoot this error.

Had you run `npm install` in the repository’s `server` directory prior to running `npm install @apollo/datasource-rest`?

It looks like the main issue here is that the `@apollo/datasource-rest` package requires that the `graphql` package have a version of 16.5.0 or higher. When you open up the `server/package.json` file, can you tell me what version of `graphql` you have listed there?

I believe that if we update the version to the below, and try running `npm install` again, we might be able to get around this problem!

```auto
"graphql": "^16.6.0",

```

Looking forward to hearing back from you!

Liz

---

<div class="post-metadata">

**Author:** ![Justin\_Gonzalez](https://sea1.discourse-cdn.com/flex019/user_avatar/community.apollographql.com/justin_gonzalez/32/5359_2.png) [@Justin\_Gonzalez](https://community.apollographql.com/u/Justin_Gonzalez)\
**Post date:** [February 6, 2025, 8:48pm UTC](https://community.apollographql.com/t/lift-off-ii-resolvers-error-with-datasource-rest/6334/4 "2025-02-06T20:48:44Z")

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