If I can get around this, I am definetively getting my license.
So I have an unfortunate log with entries as follow:

22/06/23-09:49:58.007050 Thread INFO  read 4 bytes from sock 234. Pending: 0 errno=0 [Comms.cpp:517]
22/06/23-09:49:58.007064 Thread INFO  Read from server: RpcGlobalCallback. con: sock=234 [Rpc.cpp:1060]
22/06/23-09:49:58.007072 Thread INFO  Prepare for read 4 bytes: [sock=234] [Comms.cpp:359]
22/06/23-09:49:58.007102 Thread INFO  No more action Connection::handleConnectionEvent sock = 234. mState = 1 [Comms.cpp:590]
22/06/23-09:49:58.007108 Thread INFO  Epolled: 9 flags = EPOLLIN [Comms.cpp:192]

I am using the following pattern:

%d{dd/MM/yy-%H:mm:ss.ffffff} %t %p %m [%F:%L]%n

But I keep getting bad lines like the highlighted one below, where the File Name column is wrong: