File Manager Cpanel11

One customer have problem with file manager.

he can`t see files and folders in file manager.

i go to Disk Space Usage

and give me error:

not a valid file descriptor at /usr/local/cpanel/Cpanel/DiskUsage.pm line 469
Carp::croak('not a valid file descriptor') called at
/usr/lib/perl5/site_perl/5.6.2/i686-linux/Storable.pm line 74
Storable::logcroak('not a valid file descriptor') called at
/usr/lib/perl5/site_perl/5.6.2/i686-linux/Storable.pm line 251
Storable::_store_fd('CODE(0x90a7588)', 'HASH(0x9515530)',
'GLOB(0x946a604)') called at
/usr/lib/perl5/site_perl/5.6.2/i686-linux/Storable.pm line 240
Storable::nstore_fd('HASH(0x9515530)', 'GLOB(0x946a604)') called at
/usr/local/cpanel/Cpanel/DiskUsage.pm line 469
Cpanel:iskUsage::cache_filemap('HASH(0x9515530)') called at
/usr/local/cpanel/Cpanel/DiskUsage.pm line 236
Cpanel:iskUsage:iskUsage_showmanager('', '', '', '', '', '', '',
'', ...) called at (eval 72) line 1
eval 'Cpanel:iskUsage:iskUsage_showmanager(@RARGS);' called at
cpanel.pl line 1295
main::exectag('<cpanel
DiskUsage="showmanager($FORM{'level'},$FORM{'clear'}...') called at
cpanel.pl line 4309
main::dotag(undef) called at cpanel.pl line 4198
main::cpanel_parseblock('SCALAR(0x8ea4400)') called at cpanel.pl line
4152

main::cpanel_parse('GLOB(0x90a71a4)') called at cpanel.pl line 969