diff --git a/app/Helper/functions.php b/app/Helper/functions.php
index abafe62..2be4618 100644
--- a/app/Helper/functions.php
+++ b/app/Helper/functions.php
@@ -55,6 +55,9 @@ function uf($date, $async = false) {
 	return (object) ['total' => 0];
 }
 function format($tipo, $valor, $format = null, $print = false) {
+	if ($valor === null) {
+		$valor = 0;
+	}
 	if (strtolower($tipo) == 'localdate') {
 		$d = \Carbon\Carbon::parse($valor);
 		$d->locale('es_ES');