Более аккуратная обработка сетвой ошибки на экране Vault

domain-vault/src/main/java/com/github/nullptroma/wallenc/domain/vault/storages/encrypt/EncryptedStorageAccessor.kt

@@ -115,22 +115,24 @@ class EncryptedStorageAccessor(
 
             launch {
                 source.numberOfFiles.collect {
-                    if(it == null)
+                    if (it == null) {
                         _numberOfFiles.value = null
-                    else
-                    {
-                        _numberOfFiles.value = it - getSystemFiles().size
+                    } else {
+                        val hiddenCount = runCatching { getSystemFiles().size }.getOrNull() ?: return@collect
+                        _numberOfFiles.value = it - hiddenCount
                     }
                 }
             }
 
             launch {
                 source.size.collect { sourceSize ->
-                    if(sourceSize == null)
+                    if (sourceSize == null) {
                         _size.value = null
-                    else
-                    {
-                        _size.value = sourceSize - getSystemFiles().sumOf { it.metaInfo.size }
+                    } else {
+                        val hiddenBytes = runCatching {
+                            getSystemFiles().sumOf { file -> file.metaInfo.size }
+                        }.getOrNull() ?: return@collect
+                        _size.value = sourceSize - hiddenBytes
                     }
                 }
             }