I was able to get the manufacturer template up and running on Joomla 4, following these upgrade steps:
- Install manufacturer template
Current versions:
PHP version 8.1.18
Joomla version 3.10.11
J2Store version 3.3.20
SP Page Builder 4.0.8
- Update PHP parameters
Upload Max Filesize (2M) & Post Max Size (8M) -> 64M
Memory Limit(64M) -> 128M
- Configure SP Page Builder license key & update 4.0.8 -> 4.0.10
- Update J2Store - Extensions->Manage->Install
download and install the updated FOF library (fof.zip)
download and install Joomla 4 supported J2Store (com_j2store_v4.0.0-RC-2-pro.zip)
- Update Joomla 3.10.11 -> 4.3.0
- Fix errors in /templates/manufacturer/html/mod_menu/default.php
Fix lines #30 & #41 from: "params" to "getParams()"