bootstrap, .env.ezample to add update add

kernel/helpers/Files.php

@@ -47,14 +47,15 @@ class Files
     {
         $includes = new FilesystemIterator(KERNEL_DIR);
         foreach ($includes as $include) {
-            if(is_dir($include) && !is_link($include) && $include->getFilename() !== 'app_modules') {
+            if ($include->getFilename() === 'app_modules') continue;
+
+            if(is_dir($include) && !is_link($include)) {
                 $this->recursiveRemoveDir($include);
             }
             else {
                 unlink($include);
             }
         }
-        rmdir(KERNEL_DIR);
     }
 
     public function pack(string $source, string $destination/*, bool $include_source = true*/): void