Okular fail to launch normal

[Budi]

Why does Okular fail to launch/perform normally ?
if tried with sudo now it'd work normal, and found this disaster sign:

~/.config
$ ls -l
...
...
-?????????  ? ?    ?         ?            ?  mimeapps.list
-rwxrwxrwx  1 boo boo   1487 Jul 29 20:20  oktetarc
-rwxrwxrwx  1 boo boo    381 Aug 15 01:03  okularpartrc
-?????????  ? ?    ?         ?            ?  okularrc

...

How to solve it, why there're some FS (two in this) which're
completely unidentified ?