luceos pdo is enabled and functioning. I never turn debug mode off. The uploader seems to behave fine, it doesn't throw any errors visually.
Here is the settings page:
From the error log data, I think it is related to how the relative path is set:
[error][client:IPADDRESS] File does not exist: /home/user/public_html/assets
The folder address should actually be coming up as /home/user/public_html/forum/assets