### Describe the bug I migrated from `v6` to `v7` by running the migration script: ``` npx storybook@next upgrade --prerelease ``` Then I followed these two links to make sure that everything has been migrated successfully and no more breakchanges remain: - [From version 6.5.x to 7.0.0](https://github.com/storybookjs/storybook/blob/next/MIGRATION.md#from-version-65x-to-700) - [Migration guide for Storybook 7.0](https://storybook.js.org/docs/7.0/react/migration-guide) After running `storybook dev` or `storybook build` I get the following error: ```txt 99% end closing watch compilationWARN Force closed preview build /Users/user/project/node_modules/@storybook/builder-webpack5/node_modules/webpack/lib/Compilation.js:2016 const notFoundError = new ModuleNotFoundError( ^ ModuleNotFoundError: Module not found: Error: Resolving to directories is not possible with the exports field (request was ./) at null. (/Users/user/project/node_modules/@storybook/builder-webpack5/node_modules/webpack/lib/Compilation.js:2016:28) at null. (/Users/user/project/node_modules/@storybook/builder-webpack5/node_modules/webpack/lib/NormalModuleFactory.js:798:13) at eval (eval at create (/Users/user/project/node_modules/tapable/lib/HookCodeFactory.js:28:14), :10:1) at null. (/Users/user/project/node_modules/@storybook/builder-webpack5/node_modules/webpack/lib/NormalModuleFactory.js:270:22) at eval (eval at create (/Users/user/project/node_modules/tapable/lib/HookCodeFactory.js:28:14), :9:1) at null. (/Users/user/project/node_modules/@storybook/builder-webpack5/node_modules/webpack/lib/NormalModuleFactory.js:434:22) at null. (/Users/user/project/node_modules/@storybook/builder-webpack5/node_modules/webpack/lib/NormalModuleFactory.js:116:11) at null. (/Users/user/project/node_modules/@storybook/builder-webpack5/node_modules/webpack/lib/NormalModuleFactory.js:670:25) at null. (/Users/user/project/node_modules/@storybook/builder-webpack5/node_modules/webpack/lib/NormalModuleFactory.js:855:8) at null. (/Users/user/project/node_modules/@storybook/builder-webpack5/node_modules/webpack/lib/NormalModuleFactory.js:975:5) /Users/user/project/node_modules/@storybook/builder-webpack5/node_modules/webpack/lib/Compilation.js:2016 const notFoundError = new ModuleNotFoundError( ^ ModuleNotFoundError: Module not found: Error: Resolving to directories is not possible with the exports field (request was ./) at null. (/Users/user/project/node_modules/@storybook/builder-webpack5/node_modules/webpack/lib/Compilation.js:2016:28) at null. (/Users/user/project/node_modules/@storybook/builder-webpack5/node_modules/webpack/lib/NormalModuleFactory.js:798:13) at eval (eval at create (/Users/user/project/node_modules/tapable/lib/HookCodeFactory.js:28:14), :10:1) at null. (/Users/user/project/node_modules/@storybook/builder-webpack5/node_modules/webpack/lib/NormalModuleFactory.js:270:22) at eval (eval at create (/Users/user/project/node_modules/tapable/lib/HookCodeFactory.js:28:14), :9:1) at null. (/Users/user/project/node_modules/@storybook/builder-webpack5/node_modules/webpack/lib/NormalModuleFactory.js:434:22) at null. (/Users/user/project/node_modules/@storybook/builder-webpack5/node_modules/webpack/lib/NormalModuleFactory.js:116:11) at null. (/Users/user/project/node_modules/@storybook/builder-webpack5/node_modules/webpack/lib/NormalModuleFactory.js:670:25) at null. (/Users/user/project/node_modules/@storybook/builder-webpack5/node_modules/webpack/lib/NormalModuleFactory.js:855:8) at null. (/Users/user/project/node_modules/@storybook/builder-webpack5/node_modules/webpack/lib/NormalModuleFactory.js:975:5) ``` ### To Reproduce _No response_ ### System ```shell System: OS: macOS 13.1 CPU: (8) arm64 Apple M1 Pro Binaries: Node: 16.13.0 - ~/.nvm/versions/node/v16.13.0/bin/node Yarn: 1.22.19 - /usr/local/bin/yarn npm: 8.1.0 - ~/.nvm/versions/node/v16.13.0/bin/npm Browsers: Chrome: 111.0.5563.110 Safari: 16.2 npmPackages: @storybook/addon-actions: ^7.0.0-rc.8 => 7.0.0-rc.8 @storybook/addon-essentials: ^7.0.0-rc.8 => 7.0.0-rc.8 @storybook/addon-interactions: ^7.0.0-rc.8 => 7.0.0-rc.8 @storybook/addon-links: ^7.0.0-rc.8 => 7.0.0-rc.8 @storybook/addon-mdx-gfm: ^7.0.0-rc.8 => 7.0.0-rc.8 @storybook/react: ^7.0.0-rc.8 => 7.0.0-rc.8 @storybook/react-webpack5: ^7.0.0-rc.8 => 7.0.0-rc.8 @storybook/testing-library: ^0.0.14-next.1 => 0.0.14-next.1 ``` ### Additional context _No response_

[Bug]: Module not found: Error: Resolving to directories is not possible with the exports field #21787

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