Can't able to view old graphs in new server

Help
1

i have followed the link to move old server to new server

http://docs.librenms.org/Support/FAQ/#how-do-i-move-my-librenms-install-to-another-server

but can’t able to view old graphs,
previous i have used ubuntu 16.04 / php 5.7
now ubuntu 18.04 / php 7.2

help me to solve the issue…

2

Please validate your install by running and post ./validate.php