clean up on error

exporter/callbacks.py

@@ -1,6 +1,7 @@
 import copy
 import json
 import logging
+import os
 import shutil
 import tempfile
 import time
@@ -112,6 +113,9 @@ class MatrixBotCallbacks:
                 return
 
             zipfile_name = f'{room.room_id.replace(":", "_").replace("!", "").replace(".", "")}-{int(time.time())}.zip'
+            zipfile_path = None
+            temp_dir = None
+
             start_msg = await self.client.room_send(
                 room_id=room.room_id,
                 message_type="m.room.message",
@@ -200,3 +204,7 @@ class MatrixBotCallbacks:
                     'm.room.message',
                     content
                 )
+                if zipfile_path:
+                    os.remove(zipfile_path)
+                if temp_dir:
+                    shutil.rmtree(temp_dir)