Live-Updates doesn't work on Raspberry Pi 3[BUG]

• replace the result of pip list | grep dash below

DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 won't be maintained after that date. A future version of pip will drop support for Python 2.7.
dash                               1.3.0      
dash-core-components               1.2.0      
dash-daq                           0.2.1      
dash-html-components               1.0.1      
dash-renderer                      1.1.0      
dash-table                         4.3.0

• if frontend related, tell us your Browser, Version and OS

Raspbian GNU/Linux 9 using Chromium

Describe the bug

When following the Live-Updates tutorial from https://dash.plot.ly/live-updates, the graphs appear in the web browser, but the graphs are empty. Below are screen shots of what happened vs. what is expected respectively.

SOLUTION:

The solution was to simply increase the interval to 1 * 10000 ms. Then the live-updates worked as expected. Not entirely sure why, but wanted to bring this issue up. Thanks!

Inizia riproducendo il tutorial Live-Updates su Raspbian GNU/Linux 9 con Chromium, usando le versioni dei pacchetti riportate e confrontando l’intervallo predefinito con 10000 ms. Il lavoro è completo quando i grafici vengono popolati in modo affidabile all’intervallo documentato, oppure quando vengono documentati la causa specifica di Raspberry Pi e il workaround necessario.