We have updated our robotframework library from version 6.0.2 to 7.3.1 and get the following exception from the robot-plugin:

https://jenkins.plone.org/job/pull-request-6.1-3.10/985/console (see at the bottom)

I tried to investigate why the `getDuration` call fails as it seems, that the switch to `schemaversion="5"` is responsible for this error. I attach the `robot_results.xml` file here, maybe someone has a hint for us, what is going wrong here?