I am getting the same errors

The lines of code it messes up are

setcookie("bblastvisit",$bblastactivity,mktime(0,0 ,0,0,0,2020),$cookiepath);

and

setcookie("bblastactivity",time(),mktime(0,0,0,0,0 ,2020),$cookiepath);

Here's a cut of that whole area of code

if(isset($isnews)) {
if ($bbuserid==0) {
$bbpassword="";
if (isset($bblastvisit)!=0 and $bblastvisit!=0) {
$bblastvisit=$bblastvisit;
if (isset($bblastactivity)==0 or $bblastactivity==0) {
$bblastactivity=time();
}
if (time()-$bblastactivity>$cookietimeout) {
setcookie("bblastvisit",$bblastactivity,mktime(0,0 ,0,0,0,2020),$cookiepath);
$bblastvisit=$bblastactivity;
}
} else {
setcookie("bblastvisit",time(),mktime(0,0,0,0,0,20 20),$cookiepath);
$bblastvisit=time();
}
setcookie("bblastactivity",time(),mktime(0,0,0,0,0 ,2020),$cookiepath);

$lastvisitdate=date($dateformat,$bblastvisit+(($ti meoffset)*3600))." ".date($timeformat,$bblastvisit+(($timeoffset)*360 0));

}
}

If someone is able to help I would appreciate it.