**CMK version: 2.3
**OS version: Debian 12
Hello everyone,
I have a BI rule package with many rules, starting with switches and routers. In this rule, I say “Create nodes based on Host search”. I filter by label so that all devices labeled as “Switch” are captured by this rule. In my previous versions, I was able to edit and view the rule without any issues. However, since upgrading to version 2.3, the following error message appears: “Internal error: ‘str’ object has no attribute ‘append’” (see image). This error only occurs in rules where I filter by labels; it does not appear elsewhere. Despite this, the rule still functions correctly and the switches are captured, but I can no longer edit the rule due to this error message.
Dear Enrico
