TUF-AX3000 System Status > Internet Traffic (DL/UL) bar not working

[alfky12]

Router Model Affected
TUF-AX3000 (v1)

Firmware Version Affected
3004.388.11_beta1_tuf (tuf version)

Is this bug present in upstream Merlin releases too?
TUF models are not supported by Merlin

Describe the bug
DL and UL internet traffic bar is not working, no movement.

To Reproduce
Steps to reproduce the behavior:

1. Go to 192.168.50.1/index.asp (or 192.168.50.1/device-map/router_status.asp)
2. Click on Status tab in System Status frame
3. See error in Internet Traffic bar

Expected behavior
Internet traffict DL and UL bar should move when there is internet usage.

Screenshots

[pure5665]

Same for 3006.102.6_0-gnuton0_beta2 GT-BE98 model