cURL error 77: error setting certificate verify locations

<?
$ch = curl_init()
curl_setopt($ch, CURLOPT_URL, 'https://login.aplikasidesa.net/curl.php')
curl_setopt($ch, CURLOPT_FAILONERROR, true) // Required for HTTP error codes to be reported via our call to curl_error($ch)
//...
curl_exec($ch)
if (curl_errno($ch)) {
    $error_msg = curl_error($ch)
}
curl_close($ch)
if (isset($error_msg)) {
	echo $error_msg
    // TODO - Handle cURL error accordingly
}
?>

Relating to 'SSL certificate problem: unable to get local issuer certificate' error. Rather obviously this applies to the system sending the CURL request (and no the server receiving the request)

1. Download the latest cacert.pem from https://curl.haxx.se/ca/cacert.pem
2. Add the following line to php.ini (if this is shared hosting and you don't have access to php.ini then you could add this to .user.ini in public_html)curl.cainfo="/path/to/downloaded/cacert.pem" Make sure you enclose the path within double quotation marks!!!
3. grant permission to your web server user like ngnix or www-data to read the file.sudo chown www-data /etc/ssl/certs/cacert.pem
4. last step restart fpm and ngnix or apache