Mobile App is reporting failure to setup mobile phone previously used about core HOT 3 OPEN

Hey there @home-assistant/core, mind taking a look at this issue as it has been labeled with an integration (mobile_app) you are listed as a code owner for? Thanks!

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mobile_app documentation
mobile_app source
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from core.

Same here with 2024.6.3

Error setting up entry XXX for mobile_app
Traceback (most recent call last):
File "/usr/src/homeassistant/homeassistant/config_entries.py", line 594, in async_setup
result = await component.async_setup_entry(hass, self)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[...and...]
ValueError: Handler is already defined!

Also deletion of the device or entities is not possible/successful, the error occurs again and again.

from core.

I am having the same issue, but on an iPhone… HA core: 2024.6.4, supervisor: 2024.0.6.0, OS 12.4, front end: 202406.10.1 - Running on a VM (Proxmox)

Log:
---- cut —

File “/usr/src/homeassistant/homeassistant/components/mobile_app/init.py”, line 116, in async_setup_entry

webhook_register(hass, DOMAIN, registration_name, webhook_id, handle_webhook)

File “/usr/src/homeassistant/homeassistant/components/webhook/init.py”, line 54, in async_register

raise ValueError(“Handler is already defined!”)

ValueError: Handler is already defined!

2024-06-21 17:30:26.833 ERROR (MainThread) [homeassistant.config_entries] Error setting up entry John’s iPhone for mobile_app

Traceback (most recent call last):

File “/usr/src/homeassistant/homeassistant/config_entries.py”, line 594, in async_setup

result = await component.async_setup_entry(hass, self)

from core.