Error in function createFiberFromTypeAndProps in ./node_modules

[Isaac-Tait]

I just updated Gatsby from 4.25.5 to 5.12.11 as I was waiting on DecapCMS to support React 18. They recently released a beta to test for React 18 issues/compatibility so I was able to update and begin testing Decap's beta. However, I am now getting the following error:

Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports. Check the render method of `BlogPostPage`.

Here is what I have for BlogPostPage

import React from 'react';
import { graphql, Link } from 'gatsby';
import { MDXRenderer } from 'gatsby-plugin-mdx';

import Header from '../components/header';
import Bio from '../components/bio';

export const pageQuery = graphql`
  query blogPost($id: String!, $previous: String, $next: String) {
    mdx(id: { eq: $id }) {
      frontmatter {
        title
      }
      body
      id
    }
    previous: mdx(id: { eq: $previous }) {
      fields {
        slug
      }
    }
    next: mdx(id: { eq: $next }) {
      fields {
        slug
      }
    }
  }
`;

const BlogPostPage = ({ data, pageContext, location }) => {
  console.log(data, pageContext);
  const post = data.mdx;
  const { previous, next } = data;

  return (
    <div
      location={location}
      className="bg-gradient-to-r from-pink-200 to-indigo-200"
    >
      <Header />
      {/* 👇🏼 Blog post content*/}
      <div className="max-w-6xl mx-auto md:h-screen overflow-auto">
        <div className="mx-4 text-gray-800 pt-4">
          <MDXRenderer>{post.body}</MDXRenderer>
        </div>
        <nav className="flex flex-wrap w-full justify-between px-4">
          <div>
            {next && (
              <Link to={`/updates${data.next.fields.slug}`} rel="next">
                <button className="bg-green-200 px-2 my-4 rounded-xl text-gray-200">
                  Older Updates
                </button>
              </Link>
            )}
          </div>
          <div>
            {previous && (
              <Link to={`/updates${data.previous.fields.slug}`} rel="prev">
                <button className="bg-green-200 px-2 my-4 rounded-xl text-gray-200">
                  Newer Updates
                </button>
              </Link>
            )}
          </div>
        </nav>
      </div>

      <div className="flex flex-wrap justify-center content-center">
        <p className="text-gray-600">
          Were you looking for something else? Head on over to our&nbsp;
        </p>
        <Link to={'/search'} className="underline text-red-400">
          search page
        </Link>
      </div>
      {/* 👆🏻 End of blog post content*/}
      <Bio />
    </div>
  );
};

export default BlogPostPage;

and here is my gatsby-node.js

const path = require(`path`);
const { createFilePath } = require(`gatsby-source-filesystem`);

exports.createPages = async ({ graphql, actions }) => {
  const { createPage } = actions;
  const blogTemplate = path.resolve(`./src/templates/Blogpost.js`); //template for individual blog posts
  const blogPosts = path.resolve(`./src/templates/blog-post-list.js`); //template for url/blog page
  const result = await graphql(`
    {
      allMdx(sort: { fields: [frontmatter___date], order: DESC }) {
        edges {
          node {
            body
            id
            frontmatter {
              title
            }
            fields {
              slug
            }
          }
        }
      }
    }
  `);

  const posts = result.data.allMdx.edges;
  if (posts.length > 0) {
    posts.forEach((post, index) => {
      const previous = index === 0 ? null : posts[index - 1].node.id;
      const next = index === posts.length - 1 ? null : posts[index + 1].node.id;
      createPage({
        path: `/updates${post.node.fields.slug}`,
        component: blogTemplate,
        context: {
          id: post.node.id,
          previous,
          next,
        },
      });
    });
  }

  const postsPerPage = 4;
  const numPages = Math.ceil(posts.length / postsPerPage);

  Array.from({ length: numPages }).forEach((_, i) => {
    createPage({
      path: i === 0 ? `/updates` : `/updates/${i + 1}`,
      component: blogPosts,
      context: {
        limit: postsPerPage,
        skip: i * postsPerPage,
        numPages,
        currentPage: i + 1,
      },
    });
  });
};

// The following address using slug with MDX 2 and v4 of the plugin
// https://paulie.dev/posts/2022/09/mdx-2-breaking-changes-and-gatsby-plugin-mdx-v4-slug/

exports.onCreateNode = ({ node, getNode, actions: { createNodeField } }) => {
  if (node.internal.type === 'Mdx') {
    createNodeField({
      node,
      name: 'slug',
      value: createFilePath({ node, getNode }),
    });
  }
};

exports.onCreateNode = ({ node, getNode, actions }) => {
  const { createNodeField } = actions;
  if (node.internal.type === `Mdx`) {
    const value = createFilePath({ node, getNode });
    createNodeField({
      name: `slug`,
      value,
      node,
    });
  }
};

I have a feeling that the error has something to do with syntax/protocol changes from Gatsby v4 to Gatsby v5...

[Isaac-Tait]

FYI - The error crops up in localhost only when I attempt to open a blog post... There is no error in the terminal.

When I check dev tools I have 12 errors. One states:

Check your code at Blogpost.js:44., which is this line:
<MDXRenderer>{post.body}</MDXRenderer> MDXRenderer is imported from gatsby-plugin-mdx

Is MDXRenderer deprecated?