A lot of code cleanup and code sanitation done.

pub/bin/php/Classes/serverOverviewBuilder.php

@@ -36,7 +36,7 @@ class serverOverviewBuilder
 
     public bool $showCompanies = true;
 
-    public function processServerData()
+    public function processServerData(): void
     {
         foreach ($this->servers as $server) {
             if (!empty($server['server_backup'])) {
@@ -86,7 +86,7 @@ class serverOverviewBuilder
         }
     }
 
-    private function cleanNumber($num)
+    private function cleanNumber($num): string
     {
         // If integer value, return without formatting
         if (floor($num) == $num) {
@@ -97,7 +97,7 @@ class serverOverviewBuilder
         return rtrim(rtrim(number_format($num, 10, '.', ''), '0'), '.');
     }
 
-    public function serverOverviewOutPut()
+    public function serverOverviewOutPut(): void
     { ?>
         <div class="form-group form-show-validation row mb-3">
             <?php if ($this->showServerOverviewTitle) { ?>