The plugin is not working for me, please help.

[sanky72]

When I run gatsby develop after doing the steps mentioned for gatsby-config.js. I get this error - Error in "gatsbyRepo/my-wordpress-gatsby-site/node_modules/@xebiastud io/gatsby-source-graphql-multiple/gatsby-node.js": Body must be a string. Received: undefined., with this warning before the error - Plugin @xebiastudio/gatsby-source-graphql-multiple is not compatible with your gatsby version 3.3.0 - It requires gatsby@^2.0.15

My gatsby-config.js looks like this -

/**

• 👋 Hey there!
• This file is the starting point for your new WordPress/Gatsby site! 🚀
• For more information about what this file is and does, see
• https://www.gatsbyjs.com/docs/gatsby-config/

*/

module.exports = {
/**

• Adding plugins to this array adds them to your Gatsby site.
• Gatsby has a rich ecosystem of plugins.
• If you need any more you can search here: https://www.gatsbyjs.com/plugins/
  /
  plugins: [
  {
  resolve: @xebiastudio/gatsby-source-graphql-multiple,
  options: {
  typeName: MyCombinedSource,
  fieldName: myCombinedSource,
  // The paramName will create a query parameter on myCombinedSource that determines which source to use
  // As an example, let's imagine that each source contains content in a specific language
  paramName: language,
  sources: [
  {
  key: en,
  url: example.com/en/graphql
  },
  {
  key: fr,
  url: example.com/fr/graphql
  }
  ]
  }
  },
  {
  /*
  • First up is the WordPress source plugin that connects Gatsby
  • to your WordPress site.
  • visit the plugin docs to learn more
  • https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-source-wordpress/README.md
  */
  resolve: gatsby-source-wordpress,
  options: {
  // the only required plugin option for WordPress is the GraphQL url.
  url:
  process.env.WPGRAPHQL_URL || 'http://localhost:8888/cmsProject/sitetwo/graphql' ||
  https://wpgatsbydemo.wpengine.com/graphql,
  },
  },

/**
 * We need this plugin so that it adds the "File.publicURL" to our site
 * It will allow us to access static url's for assets like PDF's
 *
 * See https://www.gatsbyjs.org/packages/gatsby-source-filesystem/ for more info
 */
{
  resolve: `gatsby-source-filesystem`,
  options: {
    name: `assets`,
    path: `${__dirname}/content/assets`,
  },
},

/**
 * The following two plugins are required if you want to use Gatsby image
 * See https://www.gatsbyjs.com/docs/gatsby-image/#setting-up-gatsby-image
 * if you're curious about it.
 */
`gatsby-transformer-sharp`,
`gatsby-plugin-sharp`,

{
  // See https://www.gatsbyjs.com/plugins/gatsby-plugin-manifest/?=gatsby-plugin-manifest
  resolve: `gatsby-plugin-manifest`,
  options: {
    name: `Gatsby Starter WordPress Blog`,
    short_name: `GatsbyJS & WP`,
    start_url: `/`,
    background_color: `#ffffff`,
    theme_color: `#663399`,
    display: `minimal-ui`,
    icon: `content/assets/gatsby-icon.png`,
  },
},

// See https://www.gatsbyjs.com/plugins/gatsby-plugin-react-helmet/?=gatsby-plugin-react-helmet
`gatsby-plugin-react-helmet`,

/**
 * this (optional) plugin enables Progressive Web App + Offline functionality
 * To learn more, visit: https://gatsby.dev/offline
 */
// `gatsby-plugin-offline`,

],
}

My gatsby version is - "gatsby": "^3.3.0".