Error browsing /etc. what should I do?

Using the GUI interface, on 5.13.1 (Build 8265), both Explorer and Commander style, when viewing this particular directory /etc/config, I get the following error:

Unexpected directory listing line 'drwxr-xr-x 1 root root 18446744073709551568 Apr 18 14:38 config'.

Are you using SCP protocol? Why? Did you try SFTP?