After restart/time get message: "Unable to load the panel source: /api/hassio/app/entrypoint.js." when trying to access addons or supervisor and also can't update to 2021.1.5

Installation Home Assistant OS
1

Hi,

After a restart or some time, I get the message: “Unable to load the panel source: /api/hassio/app/entrypoint.js.” when trying to access addons or supervisor, and, for instance, my NodeRed integration does not work anymore.

I run HASSIO as a Docker container on Ubuntu (running as a VM on my QNAP), see also the screenshot.
It is still version 2021.1.4 but I do not see an update prompt on the supervisor screen. The logs have some errors (attached below).
If I reload or restart the supervisor, I get the above message.
Can you help me? Might be fixed if I can update but I don’t know how.

image
image2497×872 164 KB

21-01-20 21:17:29 INFO (MainThread) [supervisor.resolution.check] Starting system checks with state CoreState.RUNNING
21-01-20 21:17:29 INFO (MainThread) [supervisor.resolution.check] System checks complete
21-01-20 21:31:06 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token
21-01-20 22:01:12 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token
21-01-20 22:10:28 INFO (MainThread) [supervisor.api.security] /snapshots access from cebe7a76_hassio_google_drive_backup
21-01-20 22:17:29 INFO (MainThread) [supervisor.resolution.check] Starting system checks with state CoreState.RUNNING
21-01-20 22:17:29 INFO (MainThread) [supervisor.resolution.check] System checks complete
21-01-20 22:20:05 INFO (MainThread) [supervisor.updater] Fetching update data from https://version.home-assistant.io/stable.json
21-01-20 22:20:38 INFO (MainThread) [supervisor.store.git] Update add-on https://github.com/hassio-addons/repository repository
21-01-20 22:20:38 INFO (MainThread) [supervisor.store.git] Update add-on https://github.com/home-assistant/addons repository
21-01-20 22:20:38 INFO (MainThread) [supervisor.store.git] Update add-on https://github.com/sabeechen/hassio-google-drive-backup repository
21-01-20 22:20:40 INFO (MainThread) [supervisor.store] Loading add-ons from store: 67 all - 0 new - 0 remove
21-01-20 22:20:40 INFO (MainThread) [supervisor.store] Loading add-ons from store: 67 all - 0 new - 0 remove
21-01-20 22:31:19 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token
21-01-20 23:01:25 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token
21-01-20 23:10:29 INFO (MainThread) [supervisor.api.security] /snapshots access from cebe7a76_hassio_google_drive_backup
21-01-20 23:14:42 INFO (MainThread) [supervisor.host.info] Updating local host information
21-01-20 23:14:43 INFO (MainThread) [supervisor.host.services] Updating service information
21-01-20 23:14:43 INFO (MainThread) [supervisor.host.network] Updating local network information
21-01-20 23:14:46 INFO (MainThread) [supervisor.host.sound] Updating PulseAudio information
21-01-20 23:14:46 INFO (MainThread) [supervisor.host] Host information reload completed
21-01-20 23:17:29 INFO (MainThread) [supervisor.resolution.check] Starting system checks with state CoreState.RUNNING
21-01-20 23:17:29 INFO (MainThread) [supervisor.resolution.check] System checks complete
21-01-20 23:31:32 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token
21-01-21 00:01:38 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token
21-01-21 00:10:30 INFO (MainThread) [supervisor.api.security] /snapshots access from cebe7a76_hassio_google_drive_backup
21-01-21 00:17:29 INFO (MainThread) [supervisor.resolution.check] Starting system checks with state CoreState.RUNNING
21-01-21 00:17:29 INFO (MainThread) [supervisor.resolution.check] System checks complete
21-01-21 00:20:05 INFO (MainThread) [supervisor.updater] Fetching update data from https://version.home-assistant.io/stable.json
21-01-21 00:31:47 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token
21-01-21 00:51:20 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API error: Received message 8:0 is not WSMsgType.TEXT
21-01-21 00:51:20 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API connection is closed
21-01-21 00:51:20 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API error: Received message 8:0 is not WSMsgType.TEXT
21-01-21 00:51:20 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API error: Received message 8:0 is not WSMsgType.TEXT
21-01-21 00:51:20 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API error: Received message 8:0 is not WSMsgType.TEXT
21-01-21 00:51:20 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API error: Received message 8:0 is not WSMsgType.TEXT
21-01-21 00:51:20 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API connection is closed
21-01-21 00:51:20 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API connection is closed
21-01-21 00:51:20 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API connection is closed
21-01-21 00:51:20 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API connection is closed
21-01-21 00:51:25 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API request initialize
21-01-21 00:51:25 INFO (MainThread) [supervisor.api.proxy] WebSocket access from a0d7b954_nodered
21-01-21 00:51:25 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API request initialize
21-01-21 00:51:25 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API request initialize
21-01-21 00:51:26 INFO (MainThread) [supervisor.api.proxy] WebSocket access from a0d7b954_nodered
21-01-21 00:51:26 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API request initialize
21-01-21 00:51:26 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API request initialize
21-01-21 00:51:26 INFO (MainThread) [supervisor.api.proxy] WebSocket access from a0d7b954_nodered
21-01-21 00:51:26 INFO (MainThread) [supervisor.api.proxy] WebSocket access from a0d7b954_nodered
21-01-21 00:51:26 INFO (MainThread) [supervisor.api.proxy] WebSocket access from a0d7b954_nodered
21-01-21 00:51:26 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API request running
21-01-21 00:51:26 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API request running
21-01-21 00:51:26 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API request running
21-01-21 00:51:26 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API request running
21-01-21 00:51:26 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API request running
2

What you have is called Home Assistant Supervised. A summary of the four primary installation methods is shown here.

Home Assistant Supervised is officially supported on only one Linux distro and that’s Debian (for more information, see ADR-0014). All other distros are not supported (by the development team) and only by the community.

I don’t know the answer to your question but hopefully someone else in the community does. After it has been resolved, consider switching to Debian at your earliest convenience to avoid other operational quirks resulting from running on an unsupported distro. It shouldn’t take too much time because you are using a VM.