Missing onError handler for invocation 'building-schema', error was 'Error: Schema must contain uniquely named types but contains multiple types named "GatsbyImageLayout".

[alainkaiser]

Hi all.

First of all, thanks for the cool and useful plugin.
I am currently working on a site that will access Shopify data as well as Sanity data (CMS).
The following plugins are used to access the two data stores:

gatsby-config.js:

{
  resolve: 'gatsby-source-sanity',
  options: {
    projectId: process.env.GATSBY_SANITY_PROJECT_ID,
    dataset: process.env.GATSBY_SANITY_DATASET,
    watchMode: true,
  },
},
{
  resolve: 'gatsby-source-shopify',
  options: {
    apiKey: process.env.SHOPIFY_ADMIN_API_KEY,
    password: process.env.SHOPIFY_ADMIN_PASSWORD,
    storeUrl: process.env.SHOPIFY_STORE_URL,
  },
},

If I now start the dev server with "gatsby develop", I am getting the following error:

_`Missing onError handler for invocation 'building-schema', error was 'Error: Schema must contain uniquely named types but contains multiple types named "GatsbyImageLayout".'.
Stacktrace was 'Error: Schema must contain uniquely named types but contains multiple types named "GatsbyImageLayout".
at new GraphQLSchema (/Users/alainkaiser/Documents/source/alainkaiser/easymining.ch-frontend/node_modules/graphql/type/schema.js:194:15)
at SchemaComposer.buildSchema (/Users/alainkaiser/Documents/source/alainkaiser/easymining.ch-frontend/node_modules/graphql-compose/lib/SchemaComposer.js:179:12)
at buildSchema (/Users/alainkaiser/Documents/source/alainkaiser/easymining.ch-frontend/node_modules/gatsby/src/schema/schema.js:76:33)
at build (/Users/alainkaiser/Documents/source/alainkaiser/easymining.ch-frontend/node_modules/gatsby/src/schema/index.js:105:18)
at buildSchema (/Users/alainkaiser/Documents/source/alainkaiser/easymining.ch-frontend/node_modules/gatsby/src/services/build-schema.ts:19:3)'

⠦ building schema`_

I am using the following versions:

"gatsby-source-sanity": "^7.0.0"
"gatsby-source-shopify": "rc"

The whole build process is stuck at the "building schema" step.

After some testing, I have noticed that the build works if I use only one of the two plugins, either "gatsby-source-sanity" or "gatsby-source-shopify". However, the plugins do not work together. Has anyone already had experience with a similar error or an idea for a workaround?

Thanks in advance for the help!

[sslotsky]

We saw this with contentful as well, and I think it turned out to be an issue with how they were using gatsby-plugin-image. I'll try to find more specific information but I suspect we'll have to file a bug with sanity.

[alainkaiser]

hi @sslotsky Thanks for your response. I already referenced the bug at sanity. Thank you!

[unimprobable]

@sslotsky Did you ever get anywhere with the Contentful issue? I am seeing this error when upgrading from gatsby-source-shopify v4 to v5. Cannot find other issues mentioning it.

[davidpaulsson]

@unimprobable Have you updated the Contentful source plugin as well? I had this issue previously but I think it's been resolved.

[unimprobable]

@unimprobable Have you updated the Contentful source plugin as well? I had this issue previously but I think it's been resolved.

That worked, thanks!