Like many devs at the moment, looking for log4j2 on your server... how to do? First I used the command find / -name log4j2.xml -type fWhich in turn produced the following results /opt/solr-8.5.2/server/resources/log4j2.xml /var/solr/log4j2.xml  Version Ok, so log4j2 exists on the server the client is using... in Solr.  How about determining the version number? The version here matters as 2.15.0 is good to go.  To find the version use sudo find / -name 'log4j*' The output of...