sudo logwatch
You have old files in your logwatch tmpdir (/tmp):
	logwatch.XxfZTbzS
The directories listed above were most likely created by a
logwatch run that failed to complete successfully.  If so, you
may delete these directories.

^Csystem 'cat '/tmp/logwatch.q1WnjBDH/http-archive' '/var/log/apache2/access.log.1' '/var/log/apache2/other_vhosts_access.log.1' '/var/log/apache2/access.log' '/var/log/apache2/other_vhosts_access.log'  | /usr/bin/perl /usr/share/logwatch/scripts/shared/expandrepeats ''| /usr/bin/perl /usr/share/logwatch/scripts/shared/applyhttpdate ''>/tmp/logwatch.q1WnjBDH/http' failed: 2 at /usr/sbin/logwatch line 896.


la linea 896 es esta:
         system("$Config{'pathtocat'} $Command") == 0