Try install in setting to upgrade from 6.3.0:
'Logger: homeassistant.components.websocket_api.http.connection
Source: components/hassio/update.py:169
Integration: Home Assistant WebSocket API (documentation, issues)
First occurred: 4:15:15 PM (3 occurrences)
Last logged: 4:17:05 PM
[547597660864] Error updating Mosquitto broker: Can’t install homeassistant/aarch64-addon-mosquitto:6.3.1: 404 Client Error for http+docker://localhost/v1.42/images/create?tag=6.3.1&fromImage=homeassistant%2Faarch64-addon-mosquitto&platform=linux%2Farm64: Not Found (“manifest for homeassistant/aarch64-addon-mosquitto:6.3.1 not found: manifest unknown: manifest unknown”)
Traceback (most recent call last):
File “/usr/src/homeassistant/homeassistant/components/hassio/update.py”, line 167, in async_install
await async_update_addon(self.hass, slug=self._addon_slug, backup=backup)
File “/usr/src/homeassistant/homeassistant/components/hassio/handler.py”, line 52, in _wrapper
raise HassioAPIError(data[“message”])
homeassistant.components.hassio.handler.HassioAPIError: Can’t install homeassistant/aarch64-addon-mosquitto:6.3.1: 404 Client Error for http+docker://localhost/v1.42/images/create?tag=6.3.1&fromImage=homeassistant%2Faarch64-addon-mosquitto&platform=linux%2Farm64: Not Found (“manifest for homeassistant/aarch64-addon-mosquitto:6.3.1 not found: manifest unknown: manifest unknown”)
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File “/usr/src/homeassistant/homeassistant/components/websocket_api/commands.py”, line 226, in handle_call_service
await hass.services.async_call(
File “/usr/src/homeassistant/homeassistant/core.py”, line 1974, in async_call
response_data = await coro
^^^^^^^^^^
File “/usr/src/homeassistant/homeassistant/core.py”, line 2011, in _execute_service
return await target(service_call)
^^^^^^^^^^^^^^^^^^^^^^^^^^
File “/usr/src/homeassistant/homeassistant/helpers/entity_component.py”, line 235, in handle_service
return await service.entity_service_call(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “/usr/src/homeassistant/homeassistant/helpers/service.py”, line 870, in entity_service_call
response_data = await _handle_entity_call(
^^^^^^^^^^^^^^^^^^^^^^^^^^
File “/usr/src/homeassistant/homeassistant/helpers/service.py”, line 942, in _handle_entity_call
result = await task
^^^^^^^^^^
File “/usr/src/homeassistant/homeassistant/components/update/init.py”, line 157, in async_install
await entity.async_install_with_progress(version, backup)
File “/usr/src/homeassistant/homeassistant/components/update/init.py”, line 421, in async_install_with_progress
await self.async_install(version, backup)
File “/usr/src/homeassistant/homeassistant/components/hassio/update.py”, line 169, in async_install
raise HomeAssistantError(f"Error updating {self.title}: {err}") from err
homeassistant.exceptions.HomeAssistantError: Error updating Mosquitto broker: Can’t install homeassistant/aarch64-addon-mosquitto:6.3.1: 404 Client Error for http+docker://localhost/v1.42/images/create?tag=6.3.1&fromImage=homeassistant%2Faarch64-addon-mosquitto&platform=linux%2Farm64: Not Found (“manifest for homeassistant/aarch64-addon-mosquitto:6.3.1 not found: manifest unknown: manifest unknown”)
’