Bought a SlimmeLezer+ to read data from the energy meter Aidon 6534.
Installed it according to the guide. Got power from the HAN-port using the provided serial cable, but I also needed to connect it to the USB-C to get it to work well.
Once setup and connected, I used the web interface to discover that it could not parse the data from the energy meter. The following error message was displayed in the log: