Custom integration fails in HA 0.113, which worked fine under 0.112.4

I have my own two custom integrations for covers and lights using modbus:

This two custom integrations works fine under HA 0.112.4, but fails after updating to HA 0.113.
When restarting HA only the message “Home Assistant is starting, not everything will be available until it is finished.” appears, but never finish.
Also no hint in any of the log files can be found …

Any idea what’s the problem?