dotTrace ConsoleProfiler - Stops with message 'Empty XML file'

The attempt to attach to a runnig process stops with messsage 'Empty XML file' and does not provide any snapshots:

PS C:\tools\dotTraceCommandline> .\ConsoleProfiler.exe attach 9768 --profiling-type=Sampling --save-to=c:\Snapshots\snapshot1.dtp --timeout=30s

dotTrace Console Profiler 2019.3.3 build 777.0.20200215.145421. Copyright (C) 2019 JetBrains s.r.o.

Empty XML file

What exactly is going wrong?