Custom alarm won't work

[bobvmierlo]

The component:

• Current version: v1.12.4
• Last known working version (if any): None, first install

Your setup:

• Home Assistant version: v0.113.1
• Last known working Home Assistant version (if any):
• OS: HassOS 4.11
• Browser name & version: Chrome 84.0.4147.89

Describe the bug

Custom integration won't load.

This component is not working
Check the Home Assistant log for more details.
This integration: v1.12.4

Home Assistant: v0.113.1

The log doesn't show anything usefull to me though..

To Reproduce

Expected behavior

Your bwalarm.yaml

platform: bwalarm
name: testalarm

Home Assistant log

Logger: frontend.js.latest.202007160
Source: components/system_log/__init__.py:209
First occurred: 6:43:25 PM (1 occurrences)
Last logged: 6:43:25 PM

https://MYHASURL/alarm:0:0 Uncaught

Screenshots

Additional context