Hey everyone 
I’ve been working with PrestaShop 1.7.8.x for a while now and thought it might be useful to start a thread where we can share common issues, fixes, and performance tips for this version.
Here’s what I’ve encountered so far:
Upgrading from 1.7.7 to 1.7.8 went relatively smooth using the 1-Click Upgrade module, but I had to manually fix a few things afterward:
Tip: Always make a full backup and disable non-native modules before upgrading.
I noticed that enabling Smarty caching and CCC (Combine, Compress, Cache) gives a big performance boost.
Also, switching to PHP 8.1 improved speed noticeably, but some older modules still don’t fully support it.
Workaround: Check Advanced Parameters > Logs and clear var/logs regularly — errors sometimes get buried there.
How’s everyone else’s experience with 1.7.8.x?
Let’s make this a living thread for anyone still running 1.7.8 before jumping to PrestaShop 8.
I’ve been working with PrestaShop 1.7.8.x for a while now and thought it might be useful to start a thread where we can share common issues, fixes, and performance tips for this version.
Here’s what I’ve encountered so far:
1. Upgrade Experience
Upgrading from 1.7.7 to 1.7.8 went relatively smooth using the 1-Click Upgrade module, but I had to manually fix a few things afterward:
- Theme overrides not loading correctly → cleared /var/cache/ manually.
- Some custom modules not compatible due to Symfony changes.
- Back office translations reverted to default in some sections.
Tip: Always make a full backup and disable non-native modules before upgrading. 2. Performance Improvements
I noticed that enabling Smarty caching and CCC (Combine, Compress, Cache) gives a big performance boost.
- Smarty cache: Enabled + Force compile OFF
- Combine CSS & JS: ON
- Media server (CDN): Optional but helps if you have one
Also, switching to PHP 8.1 improved speed noticeably, but some older modules still don’t fully support it.
3. Common Issues
- The “Add to cart” AJAX sometimes breaks on custom themes.
- Some modules still reference deprecated classes (e.g. Tools::jsonEncode).
- Mail sending fails with certain SMTP configs (TLS vs SSL).
Workaround: Check Advanced Parameters > Logs and clear var/logs regularly — errors sometimes get buried there.
4. Looking for Input
How’s everyone else’s experience with 1.7.8.x?
- Any specific bugs you’ve run into?
- Has anyone tried upgrading to 8.0.x yet, and was it worth it?
- Any module recommendations that are fully stable on 1.7.8?
Let’s make this a living thread for anyone still running 1.7.8 before jumping to PrestaShop 8.