Netlify Gatsby build error, build works locally

Question

Yesterday and during many months everything worked fine when adding a blogpost via Contentful that triggered a build hook on Netlify. Today a new Blogg post add and build hook via Netlify does not work. When locally running gatsby develop or gatsby build everything works and the new blogpost is there.

Here is the error on Netlify: error "gatsby-node.js" threw an error while running the createPages lifecycle: 7:19:16 PM: Reducers may not dispatch actions:

Have tried "clearing cache and deploy site" button via Netlify
Have tried gatsby clean, npm install and pushing a triggered deploy also via GitHub

Unsure how to confirm cache is cleaned and what to try next. Any ideas?

Create pages:

const Promise = require('bluebird');
const path = require('path');

exports.createSchemaCustomization = ({ actions }) => {
  const { createTypes } = actions;
  const typeDefs = `
    type ContentfulHeroBanner implements Node {
      headerLeft: String
      headerCenter: String
      headerRight: String
    }
  `;
  createTypes(typeDefs);
};

exports.createPages = ({ graphql, actions }) => {
  const { createPage } = actions;

  return new Promise((resolve, reject) => {
    const blogPost = path.resolve('./src/templates/blog-post.js');
    resolve(
      graphql(
        `
          {
            allContentfulBlogPost {
              edges {
                node {
                  title
                  slug
                }
              }
            }
          }
        `
      ).then(result => {
        if (result.errors) {
          console.log(result.errors);
          reject(result.errors);
        }

        const posts = result.data.allContentfulBlogPost.edges;
        posts.forEach((post, index) => {
          createPage({
            path: `/blog/${post.node.slug}/`,
            component: blogPost,
            context: {
              slug: post.node.slug,
            },
          });
        });
      })
    );
  });
};

It's impossible to say without knowing your project code. Could you post the content of `createPages` in `gatsby-node.js`? — ehrencrona, Jul 02 '20 at 17:55
@ehrencrona, added this fileto question. Though it has not been modified in months. — Patrik Rikama-Hinnenberg, Jul 02 '20 at 18:02
Ok found some interesting info here: https://community.netlify.com/t/support-guide-debugging-netlify-site-builds/142. Looks like I can remove my yarn.lock file if I am not using it. — Patrik Rikama-Hinnenberg, Jul 02 '20 at 18:13

score 3 · Accepted Answer · answered Jul 02 '20 at 18:43

3

I managed to solve the problem. As I just tested removing the yarn.lock file without believing it would help. But after pushing this delete yarn.lock commit to master it triggered my build and this build Git repo without yarn.lock forced Netlify to rely on Installing NPM modules in the build and forgetting about Yarn.

This helped: https://community.netlify.com/t/support-guide-debugging-netlify-site-builds/142

Something mysterious regarding cache.

answered Jul 02 '20 at 18:43

Patrik Rikama-Hinnenberg

1,362
1
16
27

2

I had a very similar situation and same build error except my gatsby repo did not include a yarn.lock file however it did contain a package-lock.json. Pushed a delete package-lock.json commit and the triggered Netlify build succeeded. Thank you. – Rich Tillis Jul 02 '20 at 21:37

Netlify Gatsby build error, build works locally

1 Answers1