gatsby: Proxy problems preventing access to Contentful space

Description

Hi, I followed the steps: https://www.gatsbyjs.org/docs/sourcing-from-contentful/ && https://www.gatsbyjs.org/packages/gatsby-source-contentful/ and kept facing issues with fetching data from Contentful

Plugin version: “gatsby-source-contentful”: “^2.3.16”,

Steps to reproduce

  {
      resolve: `gatsby-source-contentful`,
      options: {
        spaceId: `w1o2zojv27gs`,
        accessToken: `fjXk1QrVG7g7RkrFearmzuww1vzHddcAcJCld_cJtj0`, // OLD-KEY provided in example
      },
    },

Expected result

Succesful build

Actual result

Accessing your Contentful space failed.
Try setting GATSBY_CONTENTFUL_OFFLINE=true to see if we can serve from cache.

Used options:
spaceId: "*********7gs"
accessToken: "***************************************Jtj0"
host (default value): "cdn.contentful.com"
environment (default value): "master"
downloadLocal (default value): false
localeFilter (default value): [Function]
forceFullSync (default value): false
pageLimit (default value): 100
useNameForId (default value): true

not finished source and transform nodes - 0.732s
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! the-fearless-group-app@0.1.0 dev: `gatsby develop`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the the-fearless-group-app@0.1.0 dev script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/s121003/.npm/_logs/2020-06-20T10_10_09_565Z-debug.log
s121003@MacBook-Pro TFG-app % 

Environment

Run gatsby info --clipboard in your project directory and paste the output here.