Not all file-like objects implement the name attribute.

Author: GraylinKim

sc2reader/utils.py

@@ -688,7 +688,7 @@ def read_header(replay_file):
     # Sanity check that the input is in fact an MPQ file
     if buffer.empty or buffer.read_hex(4).upper() != "4D50511B":
         msg = "File '{}' is not an MPQ file";
-        raise exceptions.FileError(msg.format(replay_file.name))
+        raise exceptions.FileError(msg.format(getattr(replay_file, 'name', '<NOT AVAILABLE>')))
 
     max_data_size = buffer.read_int(LITTLE_ENDIAN)
     header_offset = buffer.read_int(LITTLE_ENDIAN)