Hass restarts permanently after upgrading to 2021.6.1

I was not able to upgrade to hass 2021.6.2 using the GUI. I upgraded to 2021.6.1 using the CLI.

But now the hass is permanently restarting.
What could be the reason and what could be a solution?

21-06-06 17:12:19 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:12:19 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:12:37 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token
21-06-06 17:13:59 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:13:59 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:15:20 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:15:20 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:16:40 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:16:40 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:18:01 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:18:01 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:19:19 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:19:19 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:20:40 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:20:41 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:21:44 INFO (MainThread) [supervisor.resolution.check] Starting system checks with state CoreState.RUNNING
21-06-06 17:21:44 INFO (MainThread) [supervisor.resolution.checks.base] Run check for IssueType.FREE_SPACE/ContextType.SYSTEM
21-06-06 17:21:44 INFO (MainThread) [supervisor.resolution.checks.base] Run check for IssueType.SECURITY/ContextType.CORE
21-06-06 17:21:44 INFO (MainThread) [supervisor.resolution.checks.base] Run check for IssueType.PWNED/ContextType.ADDON
21-06-06 17:21:44 INFO (MainThread) [supervisor.resolution.check] System checks complete
21-06-06 17:21:44 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:21:44 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:21:44 INFO (MainThread) [supervisor.resolution.fixup] Starting system autofix at state CoreState.RUNNING
21-06-06 17:21:44 INFO (MainThread) [supervisor.resolution.fixup] System autofix complete
21-06-06 17:22:01 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:22:01 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:23:21 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:23:21 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:24:41 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:24:42 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:26:01 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:26:02 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:27:22 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:27:22 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:28:42 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:28:42 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:28:43 INFO (MainThread) [supervisor.updater] Fetching update data from https://version.home-assistant.io/stable.json
21-06-06 17:28:49 INFO (MainThread) [supervisor.store.git] Update add-on https://github.com/hassio-addons/repository repository
21-06-06 17:28:49 INFO (MainThread) [supervisor.store.git] Update add-on https://github.com/sabeechen/hassio-google-drive-backup repository
21-06-06 17:28:49 INFO (MainThread) [supervisor.store.git] Update add-on https://github.com/home-assistant/addons repository
21-06-06 17:28:56 INFO (MainThread) [supervisor.store] Loading add-ons from store: 64 all - 0 new - 0 remove
21-06-06 17:28:56 INFO (MainThread) [supervisor.store] Loading add-ons from store: 64 all - 0 new - 0 remove
21-06-06 17:30:05 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:30:05 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:31:26 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:31:26 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:32:47 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:32:47 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:34:10 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:34:10 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:35:30 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:35:30 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:36:50 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:36:50 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:37:52 ERROR (MainThread) [supervisor.homeassistant.api] Error on call http://172.30.32.1:8123/api/config: [Errno 104] Connection reset by peer
21-06-06 17:38:16 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:38:16 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:39:39 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:39:39 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:41:04 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:41:04 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:42:25 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:42:25 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:43:19 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token
21-06-06 17:43:45 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:43:46 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:43:52 INFO (MainThread) [supervisor.api.middleware_security] /snapshots access from cebe7a76_hassio_google_drive_backup
21-06-06 17:45:09 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:45:09 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:46:32 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:46:32 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:47:54 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:47:54 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:48:52 INFO (MainThread) [supervisor.host.info] Updating local host information
21-06-06 17:48:53 INFO (MainThread) [supervisor.host.services] Updating service information
21-06-06 17:48:54 INFO (MainThread) [supervisor.host.network] Updating local network information
21-06-06 17:48:58 INFO (MainThread) [supervisor.host.sound] Updating PulseAudio information
21-06-06 17:48:58 INFO (MainThread) [supervisor.host] Host information reload completed
21-06-06 17:49:16 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:49:16 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:50:38 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:50:38 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:52:39 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:52:39 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:54:45 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:54:45 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:56:09 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:56:09 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete
21-06-06 17:57:31 INFO (MainThread) [supervisor.resolution.evaluate] Starting system evaluation with state CoreState.RUNNING
21-06-06 17:57:31 INFO (MainThread) [supervisor.resolution.evaluate] System evaluation complete

:thinking:
hassio su repair

A downgrade to an older version solved the issue:

ha core update --version 2021.5.5

It looks like the issue is in 2021.6. - in combination with my configuration. But what could I do now? Stay on 2021.5.5 forever is not the solution.

I also tried 2021.6.4
There is no way to get the 2021.6.x to work. It is permanently restarting.