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invalid json response with templates (gatsby)

See original GitHub issue

When developing or building in Gatsby I’m getting error messages when trying to fetch the templates

However if I try to remove mdx files to isolate which file is causing the error (the error messages don’t give a clue), I end up without any consistent finding, and this error comes and goes without any apparent explanation

At this point I am suspecting that too many files are causing this error (as if gatsby was claiming the templates multiple times instead of implementing some sort of cache), but only an hypothesis

If I manually go to the template links I can see the file without problem, now I’ll try to use local files instead, but before I wanted to ask here whether this is something known

success building schema - 0.367s

 ERROR 

Failed to get the sandbox template: vanilla


 ERROR 

Failed to get the sandbox template: new


 ERROR 

Failed to get the sandbox template: new


 ERROR 

Failed to get the sandbox template: new


 ERROR 

Failed to get the sandbox template: vanilla


 ERROR 

invalid json response body at https://codesandbox.io/api/v1/sandboxes/vanilla reason: Unexpected token < in JSON at position 0



  FetchError: invalid json response body at https://codesandbox.io/api/v1/sandboxes/vanilla reason: Unexpected token < in JSON at position 0

  - body.js:48 
    [kuworking]/[isomorphic-fetch]/[node-fetch]/lib/body.js:48:31

  - task_queues.js:97 processTicksAndRejections
    internal/process/task_queues.js:97:5

  - getTemplate.js:67 getTemplate
    [kuworking]/[remark-codesandbox]/src/getTemplate.js:67:24

  - index.js:84 transformer
    [kuworking]/[remark-codesandbox]/src/index.js:84:24

  - get-source-plugins-as-remark-plugins.js:59 transformer
    [kuworking]/[gatsby-plugin-mdx]/utils/get-source-plugins-as-remark-plugins.js:59:11



 ERROR 

invalid json response body at https://codesandbox.io/api/v1/sandboxes/new reason: Unexpected token < in JSON at position 0



  FetchError: invalid json response body at https://codesandbox.io/api/v1/sandboxes/new reason: Unexpected token < in JSON at position 0

  - body.js:48 
    [kuworking]/[isomorphic-fetch]/[node-fetch]/lib/body.js:48:31

  - runMicrotasks

  - task_queues.js:97 processTicksAndRejections
    internal/process/task_queues.js:97:5

  - getTemplate.js:67 getTemplate
    [kuworking]/[remark-codesandbox]/src/getTemplate.js:67:24

  - getTemplate.js:38 getTemplate
    [kuworking]/[remark-codesandbox]/src/getTemplate.js:38:26

  - index.js:84 transformer
    [kuworking]/[remark-codesandbox]/src/index.js:84:24

  - get-source-plugins-as-remark-plugins.js:59 transformer
    [kuworking]/[gatsby-plugin-mdx]/utils/get-source-plugins-as-remark-plugins.js:59:11



 ERROR 

invalid json response body at https://codesandbox.io/api/v1/sandboxes/new reason: Unexpected token < in JSON at position 0



  FetchError: invalid json response body at https://codesandbox.io/api/v1/sandboxes/new reason: Unexpected token < in JSON at position 0

  - body.js:48 
    [kuworking]/[isomorphic-fetch]/[node-fetch]/lib/body.js:48:31

  - runMicrotasks

  - task_queues.js:97 processTicksAndRejections
    internal/process/task_queues.js:97:5

  - getTemplate.js:67 getTemplate
    [kuworking]/[remark-codesandbox]/src/getTemplate.js:67:24

  - getTemplate.js:38 getTemplate
    [kuworking]/[remark-codesandbox]/src/getTemplate.js:38:26

  - index.js:84 transformer
    [kuworking]/[remark-codesandbox]/src/index.js:84:24

  - get-source-plugins-as-remark-plugins.js:59 transformer
    [kuworking]/[gatsby-plugin-mdx]/utils/get-source-plugins-as-remark-plugins.js:59:11



 ERROR 

invalid json response body at https://codesandbox.io/api/v1/sandboxes/new reason: Unexpected token < in JSON at position 0



  FetchError: invalid json response body at https://codesandbox.io/api/v1/sandboxes/new reason: Unexpected token < in JSON at position 0

  - body.js:48 
    [kuworking]/[isomorphic-fetch]/[node-fetch]/lib/body.js:48:31

  - runMicrotasks

  - task_queues.js:97 processTicksAndRejections
    internal/process/task_queues.js:97:5

  - getTemplate.js:67 getTemplate
    [kuworking]/[remark-codesandbox]/src/getTemplate.js:67:24

  - getTemplate.js:38 getTemplate
    [kuworking]/[remark-codesandbox]/src/getTemplate.js:38:26

  - index.js:84 transformer
    [kuworking]/[remark-codesandbox]/src/index.js:84:24

  - get-source-plugins-as-remark-plugins.js:59 transformer
    [kuworking]/[gatsby-plugin-mdx]/utils/get-source-plugins-as-remark-plugins.js:59:11



 ERROR 

invalid json response body at https://codesandbox.io/api/v1/sandboxes/vanilla reason: Unexpected token < in JSON at position 0



  FetchError: invalid json response body at https://codesandbox.io/api/v1/sandboxes/vanilla reason: Unexpected token < in JSON at position 0

  - body.js:48 
    [kuworking]/[isomorphic-fetch]/[node-fetch]/lib/body.js:48:31

  - runMicrotasks

  - task_queues.js:97 processTicksAndRejections
    internal/process/task_queues.js:97:5

  - getTemplate.js:67 getTemplate
    [kuworking]/[remark-codesandbox]/src/getTemplate.js:67:24

  - index.js:84 transformer
    [kuworking]/[remark-codesandbox]/src/index.js:84:24

  - get-source-plugins-as-remark-plugins.js:59 transformer
    [kuworking]/[gatsby-plugin-mdx]/utils/get-source-plugins-as-remark-plugins.js:59:11