[Koha] Webserver not working

[MHE IT admin]

hi, my web server has stopped working and when I try to stop and restart
Apache I get this error message

# apachectl stop apache2: Syntax error on line 230 of
/etc/apache2/apache2.conf: Syntax error on line 5 of
/etc/apache2/sites-enabled/library: Could not open configuration file
/etc/koha/apache-shared.conf: No such file or directory Action 'sto
and in fact I can not see that file in that folder, so what has happened to
that file,
I just did backup the other day via
sudo koha-dump library
do you think this has created any problem?