No Graph is showing for ports

Tags: #<Tag:0x00007fec79f38de8>

Hi

We have created new vps and installed libernms and imported the DB from old server.
Now the problem is no graphs showing for the ports.

the output of validate.php is

-bash-4.2$ ./validate.php

Component Version
LibreNMS 1.64.1-255-gcab235c
DB Schema 2020_06_23_00522_alter_availability_perc_column (170)
PHP 7.3.19
Python 3.6.8
MySQL 5.5.65-MariaDB
RRDTool 1.4.8
SNMP NET-SNMP 5.7.2

====================================

[OK] Composer Version: 1.10.8
[OK] Dependencies up-to-date.
[OK] Database connection successful
[FAIL] Time between this server and the mysql database is off
Mysql time 2020-06-27 08:45:05
PHP time 2020-06-27 04:45:05

[OK] Database schema correct

i have shared the screenshot please check it …

Thank you…