Ping graph response problem

Hi All

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Component Version
LibreNMS 21.10.0-77-g064463915
DB Schema 2021_10_20_224207_increase_length_of_attrib_type_column (224)
PHP 7.4.25
Python 3.8.10
MySQL 10.3.31-MariaDB-0ubuntu0.20.04.1
RRDTool 1.7.2
SNMP NET-SNMP 5.8

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[OK] Composer Version: 2.1.9
[OK] Dependencies up-to-date.
[OK] Database connection successful
[OK] Database schema correct

I have an issue with poller graphs.
The ping response graph has many gaps, and the poller graph display -nan legend.
I attach screenshots.

Ping Response:
image

Poller

Thanks for your help

any help with this?

no one had this problem?

Good day all.
I found this, when the polling is running.
RRDtool Output: ERROR: /opt/librenms/rrd/172.16.0.14/ping-perf.rrd: Function update_pdp_prep, case DST_GAUGE - Converted ‘2,4’ to 2,000000, but cannot convert ‘,4’

The same issue with poller graphs.

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| @@character_set_database | @@collation_database |
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| utf8 | utf8_unicode_ci |
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