Uncaught UnpicklingError in core.py line 282

[paperscissors]

Aider version: 0.75.1
Python version: 3.12.9
Platform: macOS-15.3.1-x86_64-i386-64bit
Python implementation: CPython
Virtual environment: Yes
OS: Darwin 24.3.0 (64bit)
Git version: git version 2.39.5 (Apple Git-154)

An uncaught exception occurred:

Traceback (most recent call last):
  File "aider", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "main.py", line 1081, in main
    coder.run()
  File "base_coder.py", line 832, in run
    self.run_one(user_message, preproc)
  File "base_coder.py", line 879, in run_one
    list(self.send_message(message))
  File "base_coder.py", line 1287, in send_message
    chunks = self.format_messages()
             ^^^^^^^^^^^^^^^^^^^^^^
  File "base_coder.py", line 1195, in format_messages
    chunks = self.format_chat_chunks()
             ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "base_coder.py", line 1142, in format_chat_chunks
    chunks.repo = self.get_repo_messages()
                  ^^^^^^^^^^^^^^^^^^^^^^^^
  File "base_coder.py", line 697, in get_repo_messages
    repo_content = self.get_repo_map()
                   ^^^^^^^^^^^^^^^^^^^
  File "base_coder.py", line 669, in get_repo_map
    repo_content = self.repo_map.get_repo_map(
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "repomap.py", line 132, in get_repo_map
    files_listing = self.get_ranked_tags_map(
                    ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "repomap.py", line 558, in get_ranked_tags_map
    result = self.get_ranked_tags_map_uncached(
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "repomap.py", line 589, in get_ranked_tags_map_uncached
    ranked_tags = self.get_ranked_tags(
                  ^^^^^^^^^^^^^^^^^^^^^
  File "repomap.py", line 409, in get_ranked_tags
    tags = list(self.get_tags(fname, rel_fname))
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "repomap.py", line 238, in get_tags
    val = self.TAGS_CACHE.get(cache_key)  # Issue #1308
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "core.py", line 1173, in get
    value = self._disk.fetch(mode, filename, db_value, read)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "core.py", line 282, in fetch
    return pickle.load(reader)
           ^^^^^^^^^^^^^^^^^^^
_pickle.UnpicklingError: invalid load key, '\xef'.

[paperscissors]

Context: Just opened up repo and entered a prompt.