Error when executing a pabot test

[ddelangelanged]

We recently have changed our robotframework version from 6.1.1 to 7.1.0. Additionally we have changed our python version from 3.9 to 3.12.3. We have been trying to get our tests to work for a couple of days now, where we frequently encountered errors stating that our testsuites didn't actually contain any tests. We figured out that this issue originates from the ordering file; we originally had our file content looking like:
--suite 03 test

And have now changed it to
--suite 03 test.robot

When trying to run this in our Jenkins pipeline we received the following error:

We do not quite know what's going on here and would appreciate support with our issue.