Fixed the infinite loader bug

lib/screens/auth_screen.dart

@@ -147,6 +147,9 @@ class _AuthCardState extends State<AuthCard> {
       });
     } on WgerHttpException catch (error) {
       showHttpExceptionErrorDialog(error, context);
+      setState(() {
+        _isLoading = false;
+      });
     } catch (error) {
       showErrorDialog(error, context);
       setState(() {