Help Needed: Issue with Custom Module Installation in OpenCart 4.0.x

Hi all,
I'm encountering an issue while installing a custom module on my OpenCart 4.0.x store. The module uploads successfully, but when I try to enable it in Extensions > Extensions, I get a blank page or HTTP 500 error. I've checked my server logs, but the error message is ambiguous.

Here are the steps I followed:
1. Uploaded the module through the Extension Installer.
2. Refreshed modifications.
3. Cleared the cache.

My setup includes:
- OpenCart 4.0.x
- PHP version 8.0
- Apache/2.4 server

I've double-checked file permissions and compatibility, but no luck. Has anyone faced a similar issue or could suggest a way to resolve this? Any advice is appreciated!

Thanks in advance!

Give your full OpenCart version, there are big differences even between minor versions. Check you PHP error log and post the error here is you don't understand it.

hazel44brown wrote: ↑

Sat Mar 22, 2025 6:12 pm

I'm encountering an issue while installing a custom module on my OpenCart 4.0.x store. The module uploads successfully, but when I try to enable it in Extensions > Extensions, I get a blank page or HTTP 500 error. I've checked my server logs, but the error message is ambiguous.

Could be server security like ModSecurity. The error message might be ambiguous to you, but we're likely to know what it is, so why not share it?