How to troubleshoot storybook not loading stories?

The main.js in your ./storybook folder contains the line stories: ['../src/**/*.stories.jsx?'], since your story is named Histogram.stories.js it should be like below.

module.exports = {
  stories: ['../src/**/*.stories.js']
};

I tried replicating this in my code by using your main.js and the exact same thing happened to me as well. Also adding the ? like this stories: ['../src/**/*.stories.js?'] gives the same error

Edit- you can check for both .js and .jsx by modifying the line like this stories: ['../src/**/*.stories.js(x)?']

Edit (24/7/2021) – As of today while installing storybook with npx sb init and choosing react as the template it automatically adds the below snippet in the main.js file

module.exports = {
  "stories": [
    "../stories/**/*.stories.mdx",
    "../stories/**/*.stories.@(js|jsx|ts|tsx)"
  ],
  "addons": [
    "@storybook/addon-links",
    "@storybook/addon-essentials"
  ]
}

which solves for this issue