Giga Hub unable to run speed test due to "internal error"

[ztate]

When I try to run a speed test via the Giga Hub admin website (192.168.2.1), the speed test fails to run and I get the following error message in the Logs:

The Speed Test diagnostic has failed with the "ERROR_INTERNAL" error

No additional information appears to be available online about this error. Here is the information from my Giga Hub's About page:

Firmware version:	2.13
Rescue version:	SGC83000E8
User interface version:	7.3.28
Hardware version:	5690-000001-000

[dks]

Thank you for the information. Can you still use the Internet and connect devices? 

[ztate]

Yes, but my internet connection has been dropping out intermittently over the past several weeks. After I restarted the modem the speed test started working, but why should I need to restart my router (and lose network connectivity for 5-10 minutes) just to run a speed test? It indicates some fairly terrible hardware / software is being used in these modems.

[dks]

Or it may mean your modem needs to be replaced. Call 1-866-319-2355 and describe the issue. They can guide you from there. 

[ztate · Accepted solution]

Yes; I ended up getting a replacement modem & all my issues (speed test failure, random dropouts) have disappeared.