# XMLHttpRequest cannot load hot-update.json due to access control checks

**URL:** https://discourse.roots.io/t/xmlhttprequest-cannot-load-hot-update-json-due-to-access-control-checks/12145
**Category:** sage
**Tags:** webpack, sage9
**Created:** 2018-04-08T00:29:17Z
**Posts:** 9
**Showing post:** 6 of 9

## Post 6 by @strarsis — 2018-04-18T03:05:36Z

Could this be related?:

> [@Sage 9 + BrowserSync not loading any CSS at all on 'yarn run start'](https://discourse.roots.io/t/sage-9-browsersync-not-loading-any-css-at-all-on-yarn-run-start/11332/26):
>
> @Simeon: Edit: According to author BrowserSync has to be configured with advanced key: new BrowserSyncPlugin({ target, open: config.open, proxyUrl: config.proxyUrl, watch: config.watch, delay: 500, advanced: { browserSync: { cors: true, }, }, }), Related issues:

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