Issue Php session problem

[hunterwolf]

Server operating system version

CentOS 6

Plesk version and microupdate number

18.0.31

hi.

We are having a session problem:

Warning: Unknown: open(/var/lib/php/session/sess_rkic8lh3cesgj3qr8h5avkrsr0, O_RDWR) failed: Permission denied (13) in Unknown on line 0
Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/lib/php/session) in Unknown on line 0

/var/lib/php/session folder chmod 1733 and owner root:root

[root@server ~]# stat /var/lib/php/session

File: `/var/lib/php/session'
Size: 27746304 Blocks: 54200 IO Block: 4096 directory
Device: 803h/2051d Inode: 23856201 Links: 2
Access: (1733/drwx-wx-wt) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2024-09-20 12:22:35.347487842 +0300
Modify: 2024-09-20 12:45:10.002486238 +0300
Change: 2024-09-20 12:45:10.002486238 +0300

in server have 5-6 domain. all domain open session with username: psacln
but the domain we have a problem with is open session with apache:apache

all domain installed same way. i dont why this happen and i can't fix. i need help thanks.

we use Php 5.6.40 FPM with Plesk Obsidian v.18.0.31