mod_fcgid: can't apply process slot for srvcgiphp-fcgi-starter»?

Error: mod_fcgid: can't apply process slot for makes my server mod_fcgid_ can't apply process slot mod_fcgid: can't apply process slot for cgi-system [Thu Jun 30 07 mod_fcgid_ can''t apply process slot for mod_fcgid: can't apply process slot for homealex_ What are the fcgi processes doing? alex@kallobombus:~$ ps -U

mod_fcgid_ can''t apply process slot for _var_www_cgibin_cgi_wrapper_cgi_wrapper Websites and ActiveSync services hosted in Plesk are loading slowly or fail to load with a 50x error: mod_fcgid: can't apply process slot for varwwwcgi-bin