Some graphs not displaying

Hello,

Output of validate.php:

bash-4.2$ ./validate.php
====================================
Component | Version
--------- | -------
LibreNMS  | 1.64.1-160-g953def1
DB Schema | 2020_05_22_020303_alter_metric_column (168)
PHP       | 7.3.18
Python    | 3.6.8
MySQL     | 10.4.13-MariaDB
RRDTool   | 1.7.1
SNMP      | NET-SNMP 5.7.2
====================================

[OK]    Composer Version: 1.10.7
[OK]    Dependencies up-to-date.
[OK]    Database connection successful
[OK]    Database schema correct

I’ve searched through the forums / google and can’t figure this one out. Normal graphs show fine throughout librenms, however inside Device → Graphs ‘Bits’ (or other sub categories) I am getting no charts displaying. This happens with a device, or groups of devices, screenshot below:

I am not sure how to go about debugging this. As you can see above, in the HTML dom there aren’t even any items being loaded. I’ve checked the logs, everything looks fine.

Kind regards,