WebpackError: ReferenceError: Tag is not defined

[isAlmogK]

I'm getting the following error when I tried to install the to my existing site

 ERROR 

There was an error compiling the html.js component for the development server.

See our docs page on debugging HTML builds for help https://gatsby.dev/debug-html ReferenceError: Tag is not defined


> 1 | /** @jsx jsx */
    | ^
  2 | import { jsx, ThemeProvider, merge } from 'theme-ui'
  3 | import localTheme from './index'
  4 | import components from './components'


  WebpackError: ReferenceError: Tag is not defined

My config

module.exports = {
  siteMetadata: {
    title: `Almog Development Studio`,
    description: `Bring ideas to life. - Google Flutter mobile software development`,
    author: `@almog`,
    siteUrl: `https://almog.io`
  },
  plugins: [
    {
      resolve: 'gatsby-theme-blog',
      options: {
        basePath: '/blog'
      }
    },
    {
      resolve: `gatsby-plugin-nprogress`,
      options: {
        // Setting a color is optional.
        color: `blue`,
        // Disable the loading spinner.
        showSpinner: false
      }
    },
    `gatsby-plugin-sitemap`,
    {
      resolve: `gatsby-plugin-google-analytics`,
      options: {
        trackingId: 'UA-3537187-1',
        exclude: [`/__generated/*`]
      }
    },
    {
      resolve: `gatsby-plugin-styled-components`,
      options: {
        minify: false // Breaks styles if not set to false
      }
    },
    {
      resolve: 'gatsby-plugin-robots-txt',
      options: {
        host: 'https://almog.io',
        sitemap: 'https://www.almog.io/sitemap.xml',
        policy: [{ userAgent: '*', allow: '/' }]
      }
    },
    `gatsby-plugin-react-helmet`,
    `gatsby-plugin-open-graph-images`,
    {
      resolve: `gatsby-source-filesystem`,
      options: {
        name: `images`,
        path: `${__dirname}/src/images`
      }
    },
    {
      resolve: `gatsby-source-filesystem`,
      options: {
        name: `common`,
        path: `../common/src/assets/`
      }
    },
    `gatsby-transformer-json`,
    {
      resolve: `gatsby-source-filesystem`,
      options: {
        name: `data`,
        path: `../common/src/data/`
      }
    },
    `gatsby-transformer-sharp`,
    `gatsby-plugin-sharp`,
    {
      resolve: `gatsby-plugin-manifest`,
      options: {
        name: `gatsby-starter-default`,
        short_name: `starter`,
        start_url: `/`,
        background_color: `#663399`,
        theme_color: `#663399`,
        display: `minimal-ui`,
        icon: `src/images/favicon.png` // This path is relative to the root of the site.
      }
    },
    {
      resolve: `gatsby-plugin-google-fonts-v2`,
      options: {
        fonts: [
          {
            family: `Roboto`,
            weights: [
              `100`,
              `300`,
              `400`,
              `500`,
              `700`,
              `900`,
              [`100,300, 400, 500, 700, 900`]
            ]
          },
          {
            family: `Poppins`,
            weights: [`300`, `400`, `500`, `600`, `700`]
          },
          {
            family: `Lato`,
            weights: [`300`, `400`, `700`]
          },
          {
            family: `Open Sans`,
            weights: [`300`, `400`, `600`, `700`, `800`]
          },
          {
            family: `Raleway`,
            weights: [`500`, `600`]
          },
          {
            family: `Heebo`,
            weights: [`300`, `400`, `500`, `600`, `700`, `800`]
          },
          {
            family: `B612`,
            weights: [`400`, `700`, [`400, 700`]]
          },
          {
            family: `DM Sans`,
            weights: [`400`, `500`, `700`, [`400, 500, 700`]]
          }
        ]
      }
    }
    // this (optional) plugin enables Progressive Web App + Offline functionality
    // To learn more, visit: https://gatsby.app/offline
    // 'gatsby-plugin-offline',
  ]
};

[LekoArts]

Hi!

Sorry to hear you're running into an issue. To help us best begin debugging the underlying cause, it is incredibly helpful if you're able to create a minimal reproduction. This is a simplified example of the issue that makes it clear and obvious what the issue is and how we can begin to debug it.

If you're up for it, we'd very much appreciate if you could provide a minimal reproduction and we'll be able to take another look.

Thanks for using Gatsby! 💜