Timewarrior has a diagnostics command that can be used to help determine problems. The output is:

If there are detectable problems, the diagnostics command tries to identify the cause. This command will likely grow more sophisticated over time, reporting more problems.

If you are reporting a bug, we would like to see this output. This saves us asking you a dozen questions about your platform and setup.

If you are experiencing a problem with a command, using the :debug hint to run the command in debug mode will include runtime output that can also be used to determine what happened.