Node adding issue

Hello,
we have added node in librenms. But this node shows “Never polled” and graphs are not showing correctly. can you help me to solve this issue. i attached screenshots for your reference, please check


Thank you!

Please run

./validate.php

Hello,
we ran ./validate.php and its output is below
[root@Test librenms]# ./validate.php

Component Version
LibreNMS 1.63-41-g2533064
DB Schema 2020_04_13_150500_add_last_error_fields_to_bgp_peers (164)
PHP 7.2.10
Python
MySQL 5.5.60-MariaDB
RRDTool 1.4.8
SNMP NET-SNMP 5.7.2

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

[OK] Composer Version: 1.10.6
[OK] Dependencies up-to-date.
[OK] Database connection successful
[OK] Database schema correct
[FAIL] python3 not found
[WARN] Your local git contains modified files, this could prevent automatic upd ates.
[FIX]:
You can fix this with ./scripts/github-remove
Modified Files:
html/js/app.js
html/js/vendor.js
[FAIL] Some folders have incorrect file permissions, this may cause issues.
[FIX]:
sudo chown -R librenms:librenms /opt/librenms
sudo setfacl -d -m g::rwx /opt/librenms/rrd /opt/librenms/logs /opt/libr enms/bootstrap/cache/ /opt/librenms/storage/
sudo chmod -R ug=rwX /opt/librenms/rrd /opt/librenms/logs /opt/librenms/ bootstrap/cache/ /opt/librenms/storage/
Files:
/opt/librenms/bootstrap/cache/services.php