Fixed new login with empty records

backend/php/src/index.php

@@ -409,7 +409,11 @@ error_log("message");
 						$recordStats["updateDate"] = $record->update_date;
 						$recordsStats[$record->reference] = $recordStats;
 					}
+					if ( isset( $recordsStats ) ) {
 						$result["recordsStats"] = $recordsStats;
+					} else {
+						$result["recordsStats"] = NULL;
+					}
 
 					$result["statistics"] =	$user->statistics;
 					$result["version"] =	$user->version;
@@ -543,7 +547,11 @@ error_log("message");
 
 					$user->Save();
 
+					if (isset( $parameters["parameters"]["records"]["deleted"] ) ) {
 						$recordToDeleteReferenceList = $parameters["parameters"]["records"]["deleted"];
+					} else {
+						$recordToDeleteReferenceList = NULL;
+					}
 					$recordList = array();
 					$c = count($recordToDeleteReferenceList);
 					for ($i=0; $i<$c; $i++) {