To reproduce, update the system image to the latest and add some new user
```
vyos@r14# set system login user one authentication plaintext-password 12345
[edit]
vyos@r14# commit
[ system login ]
Traceback (most recent call last):
File "/usr/libexec/vyos/services/vyos-configd", line 144, in run_script
script.verify(c)
File "/usr/libexec/vyos//conf_mode/system_login.py", line 164, in verify
result = evaluate_strength(plaintext_password)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/vyos/utils/auth.py", line 57, in evaluate_strength
cracklib.FascistCheck(passwd)
FileNotFoundError: [Errno 2] No such file or directory: '/var/cache/cracklib/cracklib_dict.pwd'
[[system login]] failed
Commit failed
[edit]
vyos@r14#
```
The bug was added after merging password complexity https://github.com/vyos/vyos-1x/pull/4390
It cannot find cache.
```
vyos@r14# ls /var/cache/cracklib
ls: cannot access '/var/cache/cracklib': No such file or directory
[edit]
vyos@r14#
[edit]
vyos@r14# ls /var/cache/
containers debconf private
[edit]
vyos@r14#
```
It seems not affected on new installed system, but only if you upgrade a system,
It should be reverted or fixed,