All devices has wrong, the same OS after LNMS upgrade

I upgraded my LibreNMS to the newest version yeasterday.
I have in my network some Cisco, Juniper and DCN devices. After this upgrade all my devices are recognized as DCN.

poller.php for Juniper MX204:
LibreNMS Poller
Starting polling run:

Hostname: mx204
Device ID: 1
OS: dcn-software
Resolved IP:

Load poller module core

Uptime: 1 year 66 days 11 hours 47 minutes 2 seconds

Runtime for poller module ‘core’: 0.0310 seconds with 50336 bytes
SNMP: [2/0.03s] MySQL: [0/0.00s] RRD: [1/0.00s]

Unload poller module core

Load poller module availability

1 day : 100%
7 days : 99.008%
30 days : 99.769%
365 days : 99.981%

Runtime for poller module ‘availability’: 0.0086 seconds with 38880 bytes
SNMP: [0/0.00s] MySQL: [5/0.00s] RRD: [5/0.00s]

Unload poller module availability

Module [ unix-agent ] disabled globally.

Load poller module os

Generic :frowning:
Location: DC
OS Version:
OS Features:

$ ./validate.php

Component Version
LibreNMS 21.7.0-28-gcca484922
DB Schema 2021_25_01_0127_create_isis_adjacencies_table (211)
PHP 7.3.29-1+0~20210701.86+debian10~1.gbp7ad6eb
Python 3.7.3
MySQL 10.6.3-MariaDB-1:10.6.3+maria~buster
RRDTool 1.7.1


[OK] Composer Version: 2.1.5
[OK] Dependencies up-to-date.
[OK] Database connection successful
[OK] Database schema correct

Updating to latest codebase OK
Updating Composer packages OK
Updating SQL-Schema OK
Updating submodules OK
Cleaning up DB OK
Fetching notifications OK
Caching PeeringDB data OK
Caching Mac OUI data OK

./discovery.php -h -m os -d

Any help will be appreciated.

Looks like you have local changes that have broken detection.

cca48492276fc010bef30398be28f4a07bf78f7c is not an upstream commit sha, so you must have committed custom changes to your local LibreNMS install.

But git diff shows no differences.

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