Hello,
we are aware that Saros needs work. Unfortunately, there is currently more-or-less no developer capacity at the Saros project.
However, the first problem in your logfile
java.lang.reflect.InaccessibleObjectException: Unable to make field private final java.util.Comparator java.util.TreeMap.comparator accessible: module java.base does not "opens java.util" to unnamed module @1f75fd1d
to me looks like it might be related to what version of the JDK or JRE you are using. Refer to the Saros documentation and try an older one.
That's all help I can offer, sorry,
Lutz Prechelt