synadm media purge -d 0 results in an UnboundLocalError

[JacksonChen666]

# synadm media purge -d 0
Traceback (most recent call last):
  File "/root/.local/bin/synadm", line 8, in <module>
    sys.exit(root())
             ^^^^^^
  File "/root/.local/share/pipx/venvs/synadm/lib64/python3.12/site-packages/click/core.py", line 1157, in __call__
    return self.main(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/root/.local/share/pipx/venvs/synadm/lib64/python3.12/site-packages/click/core.py", line 1078, in main
    rv = self.invoke(ctx)
         ^^^^^^^^^^^^^^^^
  File "/root/.local/share/pipx/venvs/synadm/lib64/python3.12/site-packages/click/core.py", line 1688, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/root/.local/share/pipx/venvs/synadm/lib64/python3.12/site-packages/click/core.py", line 1688, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/root/.local/share/pipx/venvs/synadm/lib64/python3.12/site-packages/click/core.py", line 1434, in invoke
    return ctx.invoke(self.callback, **ctx.params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/root/.local/share/pipx/venvs/synadm/lib64/python3.12/site-packages/click/core.py", line 783, in invoke
    return __callback(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/root/.local/share/pipx/venvs/synadm/lib64/python3.12/site-packages/click/decorators.py", line 45, in new_func
    return f(get_current_context().obj, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/root/.local/share/pipx/venvs/synadm/lib64/python3.12/site-packages/synadm/cli/media.py", line 255, in media_purge_cmd
    media_purged = helper.api.purge_media_cache(before_days, before, before_ts)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/root/.local/share/pipx/venvs/synadm/lib64/python3.12/site-packages/synadm/api.py", line 1243, in purge_media_cache
    before_ts)
    ^^^^^^^^^
UnboundLocalError: cannot access local variable 'before_ts' where it is not associated with a value

# synadm --version
synadm, version 0.47

My expectation for synadm media purge -d 0 is to delete pretty much all remote media up until now