gatsby develop crashes on invalid GraphQL query w/ source-contentful

[diminutivesloop]

I have a Gatsby 2 project that uses the source-contentful plugin, and when I'm running gatsby develop if I introduce a GraphQL query error the dev server crashes with the following error message and won't rebuild without a restart even if I fix the issue.

 ERROR #85923  GRAPHQL

There was an error in your GraphQL query:

Cannot query field "template_" on type "ContentfulPage".

If you don't expect "template_" to exist on the type "ContentfulPage" it is most likely a typo.
However, if you expect "template_" to exist there are a couple of solutions to common problems:

- If you added a new data source and/or changed something inside gatsby-node.js/gatsby-config.js, please try a restart of your development server
- The field might be accessible in another subfield, please try your query in GraphiQL and use the GraphiQL explorer to see which fields you can query and what shape they have
- You want to optionally use your field "template_" and right now it is not used anywhere. Therefore Gatsby can't infer the type and add it to the GraphQL schema. A quick fix is to add at least one entry with that field ("dummy content")

It is recommended to explicitly type your GraphQL schema if you want to use optional fields. This way you don't have to add the mentioned "dummy content". Visit our docs to learn how you can define the schema for "ContentfulPage":
https://www.gatsbyjs.org/docs/schema-customization/#creating-type-definitions

File: src/templates/Page.tsx:194:7

failed extract queries from components - 0.623s
[gatsby-plugin-graphql-config] wrote fragments file to .cache
success write out requires - 0.010s
success run page queries - 0.014s - 1/1 69.99/s
success Re-building development bundle - 1.344s
failed We've encountered an error: Objects are not valid as a React child (found: GraphQLDocumentError: GraphQLDocumentError: Cannot query field "template_" on type "ContentfulPartnerPage". Did you mean "template"?). If you meant to render
 a collection of children, use an array instead.
    in div (created by Box)
    in Box
    in Unknown (created by CLI)
    in div (created by Static)
    in Static (created by CLI)
    in div (created by Box)
    in Box (created by CLI)
    in div (created by Box)
    in Box (created by CLI)
    in CLI (created by ConnectedCLI)
    in ConnectedCLI
    in StoreStateProvider

I was going to report an issue, but I couldn't come up with a minimal reproduction, so I'm posting here in case anyone else has run into a similar error. Here are all the gatsby plugins I'm using.

"gatsby-plugin-google-tagmanager": "^2.7.0"
"gatsby-plugin-load-script": "^1.1.0"
"gatsby-plugin-manifest": "^2.4.14"
"gatsby-plugin-newrelic": "^1.0.5"
"gatsby-plugin-offline": "^3.2.13"
"gatsby-plugin-preconnect": "^1.2.0"
"gatsby-plugin-react-helmet": "^3.3.6"
"gatsby-plugin-robots-txt": "^1.5.5"
"gatsby-plugin-sharp": "^2.6.14"
"gatsby-plugin-sitemap": "^2.12.0"
"gatsby-plugin-use-query-params": "^1.0.1"
"gatsby-source-contentful": "^3.1.3"
"gatsby-source-filesystem": "^2.11.1"
"gatsby-transformer-sharp": "^2.5.7"
"gatsby-plugin-bundle-stats": "^2.3.0"
"gatsby-plugin-create-client-paths": "^2.3.13"
"gatsby-plugin-extract-schema": "^0.0.5"
"gatsby-plugin-graphql-codegen": "^2.7.1"
"gatsby-plugin-graphql-config": "^0.0.3"
"gatsby-plugin-lint-queries": "^0.0.3"
"gatsby-plugin-ts-config": "^1.1.5"
"gatsby-plugin-webpack-bundle-analyser-v2": "^1.1.22"