null safety

lib/pages/invoice/payment/payment_page_edit.dart

@@ -154,7 +154,7 @@ class _PaymentPageEditState extends State<PaymentPageEdit> {
             onPressed: () => Navigator.of(context).pop(),
           ),
           backgroundColor: primaryColor,
-          title: Text(AppTranslations.of(context).text("pm_.title")),
+          title: Text(AppTranslations.of(context)!.text("pm_.title")),
         ),
         body: Padding(
           padding: const EdgeInsets.all(8.0),
@@ -189,7 +189,7 @@ class _PaymentPageEditState extends State<PaymentPageEdit> {
         _widget = initialImage();
       } else {
         _widget = InkWell(
-          child: Image.asset(widget.receipt!.fileUrl, fit: BoxFit.cover),
+          child: Image.asset(widget.receipt!.fileUrl!, fit: BoxFit.cover),
           onTap: () {},
         );
       }