ERROR: Signal “SIGHUP”

ERROR: Signal “SIGHUP” (Hangup detected on controlling terminal or death of controlling process) is sent to script! This was noticed back in at the end of August. The workaround that has been implemented is, in short, commenting out code. Below are details. I Would like to know if there are better solutions.

This error is generated in /wp-content/plugins/backwpup/inc/class-job.php at line 1436:

$signals = apply_filters( ‘backwpup_job_signals_to_handel’, $signals );

Where $signals is an array of calls:

$signals = array(
//’SIGHUP’, //Term
‘SIGINT’, //Term
‘SIGQUIT’, //Core
‘SIGILL’, //Core
//’SIGTRAP’, //Core
‘SIGABRT’, //Core
‘SIGBUS’, //Core
‘SIGFPE’, //Core
//’SIGKILL’, //Term
‘SIGSEGV’, //Core
//’SIGPIPE’, Term
//’SIGALRM’, Term
‘SIGTERM’, //Term
‘SIGSTKFLT’, //Term
‘SIGUSR1’,//Term
‘SIGUSR2′, //Term
//’SIGCHLD’, //Ign
//’SIGCONT’, //Cont
//’SIGSTOP’, //Stop
//’SIGTSTP’, //Stop
//’SIGTTIN’, //Stop
//’SIGTTOU’, //Stop
//’SIGURG’, //Ign
‘SIGXCPU’, //Core
‘SIGXFSZ’, //Core
//’SIGVTALRM’, //Term
//’SIGPROF’, //Term
//’SIGWINCH’, //Ign
//’SIGIO’, //Term
‘SIGPWR’, //Term
‘SIGSYS’ //Core
);

By commenting out the ‘SIGHUP’ element of the array, the error no longer is generated, as this signal is not called to the wp function apply_filters. It is a superfluous call, to “hang up” or (close) a process function once it completes, because the kernel will automatically close the wp_cli function call once it is completed from within WP core.

The page I need help with: [log in to see the link]