Hello,
Thank you for contacting JoomShaper Support.
We have investigated the 404 error you encounter when saving pages with multiple addons in SP Page Builder and confirmed that the issue is not related to SP Page Builder or Joomla.
Findings
- SP Page Builder is functioning correctly.
- PHP and Joomla configurations are properly set.
- Pages with small POST data save successfully.
- Pages with larger POST data fail with a 404 error.
This behavior indicates a server-level POST request size limitation, enforced by ModSecurity or a Web Application Firewall (WAF). In such cases, the server masks the actual error (413 Request Entity Too Large) as a 404 for security reasons.
You can verify this behavior using the following test script:
https://kkonouz.com/simple_post_test.php
Currently, only POST requests up to approximately 500KB succeed, while larger POST sizes fail. Larger POST requests should also work, which further confirms a server-side restriction.
Required Action
This issue can only be resolved by your hosting provider.
Please contact your hosting support team and request them to increase the following limits:
SecRequestBodyLimit → at least 25MB
SecRequestBodyNoFilesLimit → at least 25MB
LimitRequestBody (Apache/LiteSpeed) → at least 20MB
Your PHP settings are already correctly configured, so no PHP changes are required.
Reference Documentation
Your hosting provider can refer to the official SP Page Builder documentation below:
https://www.joomshaper.com/documentation/sp-page-builder/troubleshooting#413-request-entity-too-large
Additional Notes
This is why the issue does not occur on localhost environments, which typically do not enforce strict ModSecurity rules.
Once your hosting provider applies these changes, SP Page Builder will save large pages without any issues.
If the problem persists after the changes, please let us know with confirmation from your host.
Best regards