Pro Forms: Form keeps loading with JSON error

Bug Reports
1

Hello,

I’m having an issue with Pro Forms on BricksForge: when I fill out all fields and click “Submit,” the form keeps loading indefinitely.

In the browser console, I see the following error:

VM330:1 Uncaught (in promise) SyntaxError: Failed to execute ‘json’ on ‘Response’: Unexpected end of JSON input
at BrfProForms.runRequests (eaa3a45……?ver=2ac93:1:114469)
at async eaa3a45……?ver=2ac93:1:132571

Has anyone encountered this error and knows how to fix it?

Thanks in advance for your help!

2

Can you check your PHP logs for errors?

3

There is no PHP errors @Daniele

4

Can you post a copy of your System Information from going to the backend in Wordpress > Bricks > System Information: and then pasting that here so we can see everything you’ve got installed and your configuration.

5

Capture d’écran 2025-09-04 à 14.09.29
Capture d’écran 2025-09-04 à 14.09.29495×881 57.3 KB

Here is it.
Thank you for your help.

6

Hello, just checking in to see if anyone had the chance to look into this issue? @Daniele @umnz
Thanks!

7

It’s strange that you can’t find any PHP errors. Normally, with such an error, there should be PHP errors. :thinking: Could you take a closer look—maybe you searched for the wrong place? Otherwise, you could also check if you have WP_DEBUG enabled in your wp-config.php. If so, disable it and try submitting the form again.

8

Hello @Daniele

Thanks for your advice. We eventually solved the issue by disabling the plugin “Internal Linking Related Contents Pro” (Internal Linking of Related Contents Pro - Free inline related posts WordPress plugin). It was causing a conflict with the Pro Forms submit functionality.

Just wanted to share this in case it helps others with a similar problem.

Best regards.

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