Cant set python alternative

Hi
I am trying to set an install of python3.7 as an alternative on Rocky 8.8 but I get this error:
the primary link for python must be /usr/bin/unversioned-python

$ sudo alternatives --config python

There are 4 programs which provide 'python'.

  Selection    Command
-----------------------------------------------
*  1           /usr/libexec/no-python
   2           /usr/bin/python3
 + 3           /usr/bin/python3.9
   4           /usr/bin/python2


$ sudo alternatives --install /usr/bin/python python /usr/bin/python3.7 5
the primary link for python must be /usr/bin/unversioned-python