Getting failures and errors when trying to import tkinter on AIX 7.2. Other modules seem to work as expected.

python> import tkinter as tk
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/usr/ud/python/lib/python3.9/tkinter/__init__.py", line 37, in <module>
    import _tkinter # If this fails your Python may not be configured for Tk
ImportError: Could not load module /usr/ud/python/lib/python3.9/lib-dynload/_tkinter.cpython-39.so.
        Dependent module /usr/lib/libtk8.6.so could not be loaded.
Could not load module /usr/lib/libtk8.6.so.
System error: Exec format error
Could not load module /usr/ud/python/lib/python3.9/lib-dynload/_tkinter.cpython-39.so.
        Dependent module /usr/ud/python/lib/python3.9/lib-dynload/_tkinter.cpython-39.so could not be loaded.

I see that tkinter does exist:

root@mis:/usr/ud/python/lib/python3.9> ls -ld tkinter
drwxr-xr-x    4 root     staff          4096 Apr 25 2022  tkinter
root@mis:/usr/ud/python/lib/python3.9> ls -la tkinter
total 784
drwxr-xr-x    4 root     staff          4096 Apr 25 2022  .
drwxr-xr-x   36 root     staff          8192 Apr 25 2022  ..
-rw-r--r--    1 root     staff        169622 Apr 25 2022  __init__.py
-rw-r--r--    1 root     staff           148 Apr 25 2022  __main__.py
drwxr-xr-x    2 root     staff          4096 Apr 25 2022  __pycache__
-rw-r--r--    1 root     staff          2660 Apr 25 2022  colorchooser.py
-rw-r--r--    1 root     staff          1245 Apr 25 2022  commondialog.py
-rw-r--r--    1 root     staff          1493 Apr 25 2022  constants.py
-rw-r--r--    1 root     staff          1543 Apr 25 2022  dialog.py
-rw-r--r--    1 root     staff         11528 Apr 25 2022  dnd.py
-rw-r--r--    1 root     staff         14947 Apr 25 2022  filedialog.py
-rw-r--r--    1 root     staff          6821 Apr 25 2022  font.py
-rw-r--r--    1 root     staff          3861 Apr 25 2022  messagebox.py
-rw-r--r--    1 root     staff          1816 Apr 25 2022  scrolledtext.py
-rw-r--r--    1 root     staff         11757 Apr 25 2022  simpledialog.py
drwxr-xr-x    5 root     staff           256 Apr 25 2022  test
-rw-r--r--    1 root     staff         76845 Apr 25 2022  tix.py
-rw-r--r--    1 root     staff         57139 Apr 25 2022  ttk.py