Lovelace hangs due to "Uncaught (in promise) RangeError: Invalid timeZoneName"

1

Hi!
When I updated to 2021.11.x everything went well except for the raspberry pi with Firefox 78 browser
which just hangs on loading lovelace. If you look in the console for Firefox you get the folloving error message:
Uncaught (in promise) RangeError: Invalid timeZoneName
__setDefaultTimeZone http://10.10.10.78:8123/frontend_latest/94a4fdf6.js:1
hassConnected http://10.10.10.78:8123/frontend_latest/app.707ed561.js:1243
s http://10.10.10.78:8123/frontend_latest/core.bba75532.js:1
c http://10.10.10.78:8123/frontend_latest/core.bba75532.js:1
Have anyone any idea of why this happen? on all other platforms Windows, Ios when using Chrome or Safari it works ok.
Best regards
Matz
Update: Clear cache and cookies do not help. HA 2021.11.x works on Chromium on the rpi so I have that as a work-a-round

2

Hi,

I have very similar problem after update to 2021.11. On desktop in Chrme browsar and on cellphone app companion Home Assistant works well. … But on Chrome browser on my tablet it is just loading never ending time without connection to lovelace. When I connected my PC to Chrome on tablet via USB debugging tool, this was in console:

Uncaught (in promise) RangeError: Invalid timeZoneName
at Function.a.DateTimeFormat.__setDefaultTimeZone (:8123/frontend_latest/94a4fdf6.js:1)
at Array.<anonymous> (:8123/frontend_latest/app.707ed561.js:1243)
at Object.s [as setState] (:8123/frontend_latest/core.bba75532.js:1)
at :8123/frontend_latest/core.bba75532.js:1

… please, does anybody know some solution?

3

Here is the solution: After core-2021.11.0 & core-2021.11.1 Update, HA Mobile & Fully Browser on tablets, stuck on "Loading Data" · Issue #59085 · home-assistant/core · GitHub

  • my TimeZone was Europe(Prague… after I changed TimeZone of my HA to Europe/Oslo, all problem solved