Errors accessing File Manager on one account

[tifano]

I have similar error with two more errors as shown in the screenshot.
I have got three accounts in my cPanel, the other two works fine, I can access file manager section.
The one with error wouldn't allow me to go past the errors.

Can you please assist what could be the issue?

have ran
I have ran ls -l /etc/mtab command, here is the results:
-rw-r--r--. 1 root root 401 Aug 16 17:45 /etc/mtab

Your help is much appreciated

Thanks

 

[Infopro]

Is this error just when you're accessing the File Manager as you mentioned?