# Getting iframe error 308

**URL:** <https://forum.builder.io/t/getting-iframe-error-308/15465>\
**Category:** Visual Editor Help\
**Created:** [July 24, 2025, 5:54pm UTC](https://forum.builder.io/t/getting-iframe-error-308/15465 "2025-07-24T17:54:03Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![glauber](https://avatars.discourse-cdn.com/v4/letter/g/a183cd/32.png) [@glauber](https://forum.builder.io/u/glauber)\
**Post date:** [July 24, 2025, 5:54pm UTC](https://forum.builder.io/t/getting-iframe-error-308/15465/1 "2025-07-24T17:54:04Z")

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**Builder content link**

> **[Builder.io: Visual Development Platform](https://builder.io/content/24ff331ea3644c0daf63dd2db5eb4ca7)**
>
> Builder is an AI-Powered Visual Development Platform that helps teams generate, iterate, and optimize web and mobile experiences in seconds instead of sprints.

**What are you trying to accomplish**  
I’m getting this weird JSON style error when I try to load this page → [Curation | Layer](https://layer.com/curation) in the Visual Editor. The same page with [http://localhost:3000](http://localhost:3000) works fine.

Other pages like… for example: [In conversation with Jeremy Schoenherr | Layer](https://layer.com/artists/jeres/interview) work both locally and in production mode, inside the Visual Editor – so I don’t think it’s an implementation issue (??)

**Screenshots or video link**

 ![image](https://us1.discourse-cdn.com/flex020/uploads/builder/original/2X/4/4737bf62939c8208c7585f1ac45faabbaf56e2c9.jpeg)

Localhost

 ![image](https://us1.discourse-cdn.com/flex020/uploads/builder/original/2X/e/e395a868199a18fff89962fd118cd4afaa7fb329.jpeg)

**Code stack you are integrating Builder with**  
NextJS 14

Any ideas of why that might be happening?

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<div class="post-metadata">

**Author:** ![ParthSharma](https://avatars.discourse-cdn.com/v4/letter/p/a9adbd/32.png) [@ParthSharma](https://forum.builder.io/u/ParthSharma)\
**Post date:** [July 25, 2025, 6:27am UTC](https://forum.builder.io/t/getting-iframe-error-308/15465/2 "2025-07-25T06:27:58Z")

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Hi glauber​,

It’s fixed. Could you please check and confirm?

Page : [Builder.io: Visual Development Platform](https://builder.io/content/24ff331ea3644c0daf63dd2db5eb4ca7/edit)

We disabled the **Proxy previews** button in Settings-\>Advanced settings. It was blocking your request.

Thank you,

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<div class="post-metadata">

**Author:** ![glauber](https://avatars.discourse-cdn.com/v4/letter/g/a183cd/32.png) [@glauber](https://forum.builder.io/u/glauber)\
**Post date:** [July 25, 2025, 5:03pm UTC](https://forum.builder.io/t/getting-iframe-error-308/15465/3 "2025-07-25T17:03:21Z")

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Thank you so much! I didn’t see the proxy settings before 🤔