Top memory widget does not show info

Hello.
Sorry for my english.
I have a problem - widget top devices not show top memory usage devices - widget is empty.

Information on the memory usage is displayed on the device panel.

How to make it work?

./validate.php

Component Version
LibreNMS 1.38-59-g052b9d1
DB Schema 247
PHP 7.2.2
MySQL 5.5.56-MariaDB
RRDTool 1.4.8
SNMP NET-SNMP 5.7.2

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

[OK] Composer Version: 1.6.4
[OK] Dependencies up-to-date.
[OK] Database connection successful
[OK] Database schema correct

check the permissions on the rrd files - actually post the output of validate.php

What do you have for the settings set to on the memory widget? image

my widget settings:
Screenshot_20180419_083515

widget not show only cisco devices.
3com and linux are displayed correctly

how are so sure those device have high enough memory to show up in the top memory limits?

i have only 1 3com switch, 1 linux server and over 100 cisco devices.
The widget is configured to display 16 devices, but only shows two - linux server and 3com switch.

The widget shows this:

3com was deleted yesterday and added again today, so the graph is empty.

Did you change any of the permissions settings, dose that user have access to view those devices?

No, I did not change the access settings.
my account has administrator access.

widget don’t show only cisco devices.
unifi, 3com, linux - ok.
:frowning: