1 files changed, 2 insertions, 2 deletions
diff --git a/vendor/chillerlan/php-qrcode/src/Output/QRString.php b/vendor/chillerlan/php-qrcode/src/Output/QRString.php
index 3ed5153e1..441ef99fd 100644
--- a/vendor/chillerlan/php-qrcode/src/Output/QRString.php
+++ b/vendor/chillerlan/php-qrcode/src/Output/QRString.php
@@ -50,7 +50,7 @@ class QRString extends QROutputAbstract{
 	/**
 	 * string output
 	 */
-	protected function text(string $file = null):string{
+	protected function text(?string $file = null):string{
 		$str = [];
 
 		foreach($this->matrix->matrix() as $row){
@@ -69,7 +69,7 @@ class QRString extends QROutputAbstract{
 	/**
 	 * JSON output
 	 */
-	protected function json(string $file = null):string{
+	protected function json(?string $file = null):string{
 		return json_encode($this->matrix->matrix());
 	}