Fix error when error is null

lib/logic/cubit/backups/backups_cubit.dart

@@ -56,7 +56,7 @@ class BackupsCubit extends AppConfigDependendCubit<BackupsState> {
               preventActions: false,
               progress: status.progress,
               status: status.status,
-              error: status.errorMessage,
+              error: status.errorMessage ?? '',
               refreshing: false,
             ));
             break;
@@ -69,7 +69,7 @@ class BackupsCubit extends AppConfigDependendCubit<BackupsState> {
               preventActions: true,
               progress: status.progress,
               status: status.status,
-              error: status.errorMessage,
+              error: status.errorMessage ?? '',
               refreshTimer: Duration(seconds: 5),
               refreshing: false,
             ));

lib/logic/models/backup.dart

@@ -41,7 +41,7 @@ class BackupStatus {
   final BackupStatusEnum status;
   final double progress;
   @JsonKey(name: 'error_message')
-  final String errorMessage;
+  final String? errorMessage;
 
   factory BackupStatus.fromJson(Map<String, dynamic> json) =>
       _$BackupStatusFromJson(json);

lib/logic/models/backup.g.dart

@@ -17,7 +17,7 @@ BackupStatus _$BackupStatusFromJson(Map<String, dynamic> json) {
   return BackupStatus(
     status: _$enumDecode(_$BackupStatusEnumEnumMap, json['status']),
     progress: (json['progress'] as num).toDouble(),
-    errorMessage: json['error_message'] as String,
+    errorMessage: json['error_message'] as String?,
   );
 }
 

lib/ui/pages/backup_details/backup_details.dart

@@ -105,6 +105,13 @@ class _BackupDetailsState extends State<BackupDetails>
                         children: [
                           if (backupStatus == BackupStatusEnum.initialized)
                             ListTile(
+                              onTap: preventActions
+                                  ? null
+                                  : () async {
+                                      await context
+                                          .read<BackupsCubit>()
+                                          .createBackup();
+                                    },
                               leading: Icon(
                                 Icons.add_circle_outline_rounded,
                                 color: BrandColors.textColor1,