Mouseover minigraph broken on dashboard Top Devices (Disk usage)

Tags: #<Tag:0x00007f3b7d32fba8> #<Tag:0x00007f3b7d32fa68>

I have an issue where the mini graphs for mouseover are broken when using the dashboard widget “Top Devices” and setting “Disk usage” as query. For all other categories the mini graphs are working.

The target url for the mouseover graph is like below (not working):
http://librenms.local/graphs/to=1605783172/from=1605696772/id=181/type=device_storage/

If I change the “/type” to for the url to “/type=storage_usage” then it works:
http://librenms.local/graphs/to=1605783172/from=1605696772/id=181/type=storage_usage/

Could this be a bug or something with our installation? We have done quite a few updates over time on this installation and I have not had time to install a fresh system to replicate the issue.

Here a screenshots and output from validate.php:

-bash-4.2$ ./validate.php
====================================
Component | Version
--------- | -------
LibreNMS  | 1.69-37-g0ede8a2
DB Schema | 2020_11_02_164331_add_powerstate_enum_to_vminfo (190)
PHP       | 7.4.12
Python    | 3.6.8
MySQL     | 5.5.68-MariaDB
RRDTool   | 1.7.0
SNMP      | NET-SNMP 5.7.2
OpenSSL   |
====================================

[OK]    Composer Version: 2.0.7
[OK]    Dependencies up-to-date.
[OK]    Database connection successful
[OK]    Database schema correct