Fixed code indentation

backend/php/src/index.php

@@ -723,9 +723,9 @@ error_log("message");
 				//=============================================================
 			} else if (isset($_SESSION['K'])) {
 				$result["error"] = "Wrong shared secret!";
-                        } else {
-                            $result["result"] = "EXCEPTION";
-                            $result["message"] = "Trying to communicate without an active connection";
+			} else {
+				$result["result"] = "EXCEPTION";
+				$result["message"] = "Trying to communicate without an active connection";
 			}
 			break;