use certbot for gatering informations

controllers/GetSSLDaysController.php

@@ -14,12 +14,14 @@ class GetSSLDaysController {
         exec("sudo certbot certificates --cert-name $domain | grep 'Expiry' | grep 'Expiry'", $phpOutput, $phpReturnCode);
 
         if(empty($phpOutput)){
+            http_response_code(200);
             echo json_encode([
                 'ssl_expiry' => "-",
                 'ssl_remaining' => "-"
             ]);
         } else {
             $sslData = explode(" ",$phpOutput[0]);
+            http_response_code(200);
             echo json_encode([
                 'ssl_expiry' => $sslData[6],
                 'ssl_remaining' => $sslData[9]