Uncaught AttributeError in io.py line 500

[NU11V01D]

Aider version: 0.88.1
Python version: 3.14.0
Platform: macOS-10.15.7-x86_64-i386-64bit-Mach-O
Python implementation: CPython
Virtual environment: No
OS: Darwin 19.6.0 (64bit)
Git version: git version 2.51.0

An uncaught exception occurred:

Traceback (most recent call last):
  File "aider-ce", line 8, in <module>
    sys.exit(main())
             ~~~~^^
  File "main.py", line 474, in main
    return asyncio.run(main_async(argv, input, output, force_git_root, return_coder))
           ~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "runners.py", line 204, in run
    return runner.run(main)
           ~~~~~~~~~~^^^^^^
  File "runners.py", line 127, in run
    return self._loop.run_until_complete(task)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^
  File "base_events.py", line 719, in run_until_complete
    return future.result()
           ~~~~~~~~~~~~~^^
  File "main.py", line 1212, in main_async
    await coder.run()
  File "base_coder.py", line 1070, in run
    return await self._run_patched(with_message, preproc)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "base_coder.py", line 1096, in _run_patched
    self.io.stop_spinner()
    ~~~~~~~~~~~~~~~~~~~~^^
  File "io.py", line 500, in stop_spinner
    self.spinner_last_frame_index = self.spinner_frame_index
                                    ^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'InputOutput' object has no attribute 'spinner_frame_index'