No service: modbus.write_register after update to 2024.4.1

Where modbus service after last update!?

It still exists, if it doesn’t clear your cache and refresh the page. If it still doesn’t make sure you’re connected to modbus. There were deprecations that were removed that have been spamming logs for the past 6 months that people have been ignoring. If you ignored those configuration changes, modbus likely hasn’t loaded into your system.