Smartmeter Binding throws "unable to open port" after a while

[Tuny (Sebastian)]

There is a soution which helped me. See here:

OH3.X & OH4.X Alternative Java serial provider

By default, the serial connection on the openHAB system is done with nrjavaserial. Unfortunately there are some issues with this provider, so some (unstable) COM-connections can lock up after a while. See here: In my case I had big problems with the connection to my smart meter trough an optical probe. As “workaround” I had to restart the whole openHAB instance after some hours. This was very frustrating. Now there is a “real workaround”, which I found here in the forum more or less by accid…