44d1a1cb15
This PR is part of a larger effort to migrate error messages to MDX and use App Router: https://github.com/vercel/front/pull/23459
16 lines
643 B
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16 lines
643 B
Text
---
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title: '`popstate` called with empty state'
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---
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## Why This Error Occurred
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When using the browser back button the popstate event is triggered. Next.js sees a
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`popstate` event being triggered but `event.state` did not have `url` or `as`, causing a route change failure.
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## Possible Ways to Fix It
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The only known cause of this issue is manually manipulating `window.history` instead of using `next/router`. Starting from version 9.5, Next.js will ignore `popstate` events that contain `event.state` not created by its own router.
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## Useful Links
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- [The issue this was reported in: #4994](https://github.com/vercel/next.js/issues/4994)
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