Updated isInstall() method

Updated inInstall herlper method to check value of install from config data as env(DB_INSTALL) returns null in some system

app/Console/Commands/TicketFetch.php

@@ -40,7 +40,7 @@ class TicketFetch extends Command
      */
     public function handle()
     {
-        if (env('DB_INSTALL') == 1) {
+        if (isInstall()) {
             $controller = $this->mailController();
             $emails = new \App\Model\helpdesk\Email\Emails();
             $settings_email = new \App\Model\helpdesk\Settings\Email();

app/Http/helpers.php

@@ -124,7 +124,7 @@ function isInstall()
 {
     $check = false;
     $env = base_path('.env');
-    if (\File::exists($env) && env('DB_INSTALL') == 1) {
+    if (\File::exists($env) && \Config::get('database.install') == 1) {
         $check = true;
     }