Daily restart, but why?

Hello,
I’m having a pretty painful problem that I can’t seem to resolve.
I use Node-Red for my automations and for 2 days (I am just starting), Home Assistant restarts between 7.45 am and 7.50 am, just when the automations should take place.
As Home Assistant is unavailable, Node-Red cannot connect to it and nothing happens.
I do not understand what is going on so I am referring to you!
Here are the code and supervisor logs.
I am on HassOS on VM Synology.
Thank you !

First lines of home-assistant.log (UTC+1)

2021-02-27 07:48:14 WARNING (MainThread) [homeassistant.loader] You are using a custom integration for hacs which has not been tested by Home Assistant. This component might cause stability problems, be sure to disable it if you experience issues with Home Assistant.
2021-02-27 07:48:14 WARNING (MainThread) [homeassistant.loader] You are using a custom integration for browser_mod which has not been tested by Home Assistant. This component might cause stability problems, be sure to disable it if you experience issues with Home Assistant.
2021-02-27 07:48:14 WARNING (MainThread) [homeassistant.loader] You are using a custom integration for ipx800 which has not been tested by Home Assistant. This component might cause stability problems, be sure to disable it if you experience issues with Home Assistant.
2021-02-27 07:48:15 WARNING (MainThread) [homeassistant.loader] You are using a custom integration for livebox which has not been tested by Home Assistant. This component might cause stability problems, be sure to disable it if you experience issues with Home Assistant.
2021-02-27 07:48:16 INFO (MainThread) [homeassistant.setup] Setup of domain logger took 0.0 seconds
2021-02-27 07:48:17 INFO (MainThread) [homeassistant.setup] Setting up recorder
2021-02-27 07:48:17 INFO (MainThread) [homeassistant.setup] Setting up http
2021-02-27 07:48:17 INFO (MainThread) [homeassistant.setup] Setup of domain http took 0.1 seconds
2021-02-27 07:48:18 INFO (MainThread) [homeassistant.setup] Setting up system_log
2021-02-27 07:48:18 INFO (MainThread) [homeassistant.setup] Setup of domain system_log took 0.0 seconds
2021-02-27 07:48:18 WARNING (Recorder) [homeassistant.components.recorder] Ended unfinished session (id=2 from 2021-02-26 19:43:55)
2021-02-27 07:48:18 INFO (MainThread) [homeassistant.setup] Setup of domain recorder took 1.2 seconds
2021-02-27 07:48:18 INFO (MainThread) [homeassistant.bootstrap] Setting up stage 1: {'webhook', 'websocket_api', 'image', 'alexa', 'auth', 'device_automation', 'frontend', 'system_log', 'hassio', 'cloud', 'config', 'onboarding', 'api', 'http', 'search', 'lovelace', 'person'}
2021-02-27 07:48:19 INFO (MainThread) [homeassistant.setup] Setting up webhook
2021-02-27 07:48:19 INFO (MainThread) [homeassistant.setup] Setup of domain webhook took 0.0 seconds
2021-02-27 07:48:19 INFO (MainThread) [homeassistant.setup] Setting up websocket_api
2021-02-27 07:48:19 INFO (MainThread) [homeassistant.setup] Setup of domain websocket_api took 0.0 seconds
2021-02-27 07:48:22 INFO (MainThread) [homeassistant.setup] Setting up alexa
2021-02-27 07:48:22 INFO (MainThread) [homeassistant.setup] Setup of domain alexa took 0.0 seconds
2021-02-27 07:48:22 INFO (MainThread) [homeassistant.setup] Setting up auth
2021-02-27 07:48:22 INFO (MainThread) [homeassistant.setup] Setup of domain auth took 0.0 seconds
2021-02-27 07:48:22 INFO (MainThread) [homeassistant.setup] Setting up device_automation
2021-02-27 07:48:22 INFO (MainThread) [homeassistant.setup] Setup of domain device_automation took 0.0 seconds
2021-02-27 07:48:22 INFO (MainThread) [homeassistant.setup] Setting up hassio
2021-02-27 07:48:23 INFO (MainThread) [homeassistant.setup] Setting up config
2021-02-27 07:48:23 INFO (MainThread) [homeassistant.setup] Setting up api
2021-02-27 07:48:23 INFO (MainThread) [homeassistant.setup] Setup of domain api took 0.0 seconds
2021-02-27 07:48:23 INFO (MainThread) [homeassistant.setup] Setting up lovelace
2021-02-27 07:48:23 INFO (MainThread) [homeassistant.setup] Setting up image
2021-02-27 07:48:23 INFO (MainThread) [homeassistant.setup] Setup of domain config took 0.7 seconds
2021-02-27 07:48:23 INFO (MainThread) [homeassistant.setup] Setting up search
2021-02-27 07:48:23 INFO (MainThread) [homeassistant.setup] Setup of domain search took 0.0 seconds
2021-02-27 07:48:23 INFO (MainThread) [homeassistant.setup] Setup of domain lovelace took 0.4 seconds
2021-02-27 07:48:23 INFO (MainThread) [homeassistant.setup] Setup of domain image took 0.1 seconds
2021-02-27 07:48:23 INFO (SyncWorker_0) [homeassistant.loader] Loaded google_assistant from homeassistant.components.google_assistant
2021-02-27 07:48:23 INFO (MainThread) [homeassistant.setup] Setting up person
2021-02-27 07:48:26 INFO (MainThread) [homeassistant.setup] Setting up cloud
2021-02-27 07:48:26 INFO (MainThread) [homeassistant.setup] Setup of domain cloud took 0.1 seconds
2021-02-27 07:48:26 INFO (MainThread) [homeassistant.setup] Setup of domain person took 2.6 seconds
2021-02-27 07:48:26 INFO (MainThread) [homeassistant.setup] Setting up onboarding
2021-02-27 07:48:26 INFO (MainThread) [homeassistant.setup] Setup of domain onboarding took 0.0 seconds
2021-02-27 07:48:27 INFO (SyncWorker_2) [homeassistant.loader] Loaded panel_custom from homeassistant.components.panel_custom
2021-02-27 07:48:27 INFO (MainThread) [homeassistant.setup] Setting up frontend
2021-02-27 07:48:27 INFO (MainThread) [homeassistant.setup] Setup of domain frontend took 0.2 seconds
2021-02-27 07:48:28 INFO (MainThread) [homeassistant.components.http] Now listening on port 9443
2021-02-27 07:48:28 INFO (MainThread) [homeassistant.setup] Setup of domain hassio took 6.1 seconds
2021-02-27 07:48:28 INFO (MainThread) [homeassistant.bootstrap] Setting up stage 2: {'telegram_bot', 'melcloud', 'alarm_control_panel', 'brother', 'mqtt', 'mobile_app', 'input_boolean', 'cover', 'light', 'hacs', 'lock', 'zone', 'updater', 'tag', 'browser_mod', 'map', 'rfxtrx', 'blueprint', 'netatmo', 'input_datetime', 'logbook', 'script', 'met', 'media_source', 'dhcp', 'ffmpeg', 'zeroconf', 'notify', 'input_text', 'input_number', 'tts', 'sensor', 'persistent_notification', 'input_select', 'zwave_js', 'meteo_france', 'system_health', 'media_player', 'camera', 'ring', 'history', 'timer', 'group', 'automation', 'synology_dsm', 'sun', 'cast', 'ipx800', 'upnp', 'scene', 'ipp', 'counter', 'ssdp', 'livebox', 'device_tracker', 'default_config', 'influxdb', 'deconz'}
2021-02-27 07:48:29 INFO (MainThread) [homeassistant.setup] Setting up melcloud
2021-02-27 07:48:29 INFO (MainThread) [homeassistant.setup] Setup of domain melcloud took 0.0 seconds
2021-02-27 07:48:29 INFO (SyncWorker_4) [homeassistant.loader] Loaded manual from homeassistant.components.manual
2021-02-27 07:48:29 INFO (MainThread) [homeassistant.setup] Setting up input_boolean
2021-02-27 07:48:29 INFO (MainThread) [homeassistant.setup] Setting up cover
2021-02-27 07:48:29 INFO (MainThread) [homeassistant.setup] Setup of domain cover took 0.0 seconds
2021-02-27 07:48:29 INFO (MainThread) [homeassistant.setup] Setting up light
2021-02-27 07:48:29 INFO (MainThread) [homeassistant.setup] Setting up zone
2021-02-27 07:48:29 INFO (SyncWorker_7) [homeassistant.loader] Loaded nuki from homeassistant.components.nuki
2021-02-27 07:48:29 INFO (MainThread) [homeassistant.setup] Setting up updater
2021-02-27 07:48:29 INFO (MainThread) [homeassistant.setup] Setup of domain updater took 0.0 seconds
2021-02-27 07:48:29 INFO (MainThread) [homeassistant.setup] Setting up tag
2021-02-27 07:48:29 INFO (MainThread) [homeassistant.setup] Setting up browser_mod
2021-02-27 07:48:29 INFO (MainThread) [homeassistant.setup] Setup of domain browser_mod took 0.0 seconds
2021-02-27 07:48:29 INFO (MainThread) [homeassistant.setup] Setting up map
2021-02-27 07:48:29 INFO (MainThread) [homeassistant.setup] Setup of domain map took 0.0 seconds
2021-02-27 07:48:29 INFO (MainThread) [homeassistant.setup] Setting up rfxtrx
2021-02-27 07:48:29 INFO (MainThread) [homeassistant.setup] Setup of domain rfxtrx took 0.0 seconds
2021-02-27 07:48:29 INFO (MainThread) [homeassistant.setup] Setting up blueprint
2021-02-27 07:48:29 INFO (MainThread) [homeassistant.setup] Setup of domain blueprint took 0.0 seconds
2021-02-27 07:48:30 INFO (MainThread) [homeassistant.setup] Setting up input_datetime
2021-02-27 07:48:30 INFO (MainThread) [homeassistant.setup] Setting up logbook
2021-02-27 07:48:30 INFO (MainThread) [homeassistant.setup] Setting up script
2021-02-27 07:48:30 INFO (MainThread) [homeassistant.setup] Setup of domain script took 0.0 seconds
2021-02-27 07:48:31 INFO (MainThread) [homeassistant.setup] Setting up met
2021-02-27 07:48:31 INFO (MainThread) [homeassistant.setup] Setup of domain met took 0.0 seconds
2021-02-27 07:48:31 INFO (MainThread) [homeassistant.setup] Setting up media_source
2021-02-27 07:48:34 INFO (MainThread) [homeassistant.setup] Setting up dhcp
2021-02-27 07:48:34 INFO (MainThread) [homeassistant.setup] Setup of domain dhcp took 0.0 seconds
2021-02-27 07:48:34 INFO (MainThread) [homeassistant.setup] Setting up ffmpeg
2021-02-27 07:48:34 INFO (MainThread) [homeassistant.setup] Setting up input_text
2021-02-27 07:48:34 INFO (MainThread) [homeassistant.setup] Setting up input_number
2021-02-27 07:48:34 INFO (MainThread) [homeassistant.setup] Setting up input_select
2021-02-27 07:48:35 INFO (SyncWorker_3) [homeassistant.loader] Loaded telegram from homeassistant.components.telegram
2021-02-27 07:48:35 INFO (SyncWorker_6) [homeassistant.loader] Loaded template from homeassistant.components.template
2021-02-27 07:48:35 INFO (MainThread) [homeassistant.setup] Setting up meteo_france
2021-02-27 07:48:35 INFO (MainThread) [homeassistant.setup] Setup of domain meteo_france took 0.0 seconds
2021-02-27 07:48:35 INFO (MainThread) [homeassistant.setup] Setting up system_health
[...]
2021-02-27 07:49:20 INFO (MainThread) [homeassistant.bootstrap] Home Assistant initialized in 66.79s
2021-02-27 07:49:20 INFO (MainThread) [homeassistant.core] Starting Home Assistant

Supervisor (UTC):

21-02-27 05:19:31 INFO (MainThread) [supervisor.resolution.check] Starting system checks with state CoreState.RUNNING
21-02-27 05:19:32 INFO (MainThread) [supervisor.resolution.check] System checks complete
21-02-27 05:19:58 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token
21-02-27 05:19:58 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token
21-02-27 05:49:59 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token
21-02-27 05:49:59 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token
21-02-27 06:19:32 INFO (MainThread) [supervisor.resolution.check] Starting system checks with state CoreState.RUNNING
21-02-27 06:19:32 INFO (MainThread) [supervisor.resolution.check] System checks complete
21-02-27 06:20:01 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token
21-02-27 06:20:01 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token
21-02-27 06:24:11 INFO (MainThread) [supervisor.snapshots] Found 1 snapshot files
21-02-27 06:25:01 INFO (MainThread) [supervisor.updater] Fetching update data from https://version.home-assistant.io/stable.json
21-02-27 06:43:27 INFO (MainThread) [supervisor.host.info] Updating local host information
21-02-27 06:43:44 INFO (MainThread) [supervisor.host.services] Updating service information
21-02-27 06:43:46 INFO (MainThread) [supervisor.host.network] Updating local network information
21-02-27 06:43:54 INFO (MainThread) [supervisor.host.sound] Updating PulseAudio information
21-02-27 06:43:57 INFO (MainThread) [supervisor.host] Host information reload completed
21-02-27 06:47:32 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API error: Received message 257:None is not str
21-02-27 06:47:32 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API connection is closed
21-02-27 06:49:33 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API request initialize
21-02-27 06:49:34 INFO (MainThread) [supervisor.api.proxy] WebSocket access from a0d7b954_nodered
21-02-27 06:49:35 INFO (MainThread) [supervisor.api.proxy] Home Assistant WebSocket API request running
21-02-27 06:50:03 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token
21-02-27 06:50:03 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token
21-02-27 07:19:32 INFO (MainThread) [supervisor.resolution.check] Starting system checks with state CoreState.RUNNING
21-02-27 07:19:32 INFO (MainThread) [supervisor.resolution.check] System checks complete
21-02-27 07:24:58 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token
21-02-27 07:24:58 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token
21-02-27 07:31:14 INFO (MainThread) [supervisor.store.git] Update add-on https://github.com/home-assistant/addons repository
21-02-27 07:31:15 INFO (MainThread) [supervisor.store.git] Update add-on https://github.com/hassio-addons/repository repository
21-02-27 07:31:49 INFO (MainThread) [supervisor.store] Loading add-ons from store: 66 all - 0 new - 0 remove
21-02-27 07:31:49 INFO (MainThread) [supervisor.store] Loading add-ons from store: 66 all - 0 new - 0 remove
21-02-27 07:55:03 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token
21-02-27 07:55:03 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token

Thanks for your help !