Fixed issue in sync

boards/models/post/sync.py

@@ -189,7 +189,7 b' class SyncManager:'
                         if attached_file is None:
                             raise SyncException('File was not dowloaded')
 
-                        hash = get_file_hash(file)
+                        hash = get_file_hash(attached_file)
                         if hash != attachment.text:
                             raise SyncException('File hash does not match attachment hash')