Fix bad image downloads

maubot.yaml

@@ -1,6 +1,6 @@
 maubot: 0.1.0
 id: lomion.tmdb
-version: 1.3.0+scott-1fb64b9
+version: 1.3.0+scott
 license: AGPL 3.0
 modules:
 - tmdb

tmdb/tmdb_api.py

@@ -76,8 +76,11 @@ class TmdbApiSingle(TmdbApi):
 
     async def query_image_binary(self):
         if self.poster_url:
-            async with self.session.get(self.poster_url) as resp:
-                self.poster_binary = await resp.read()
+            try:
+                async with self.session.get(self.poster_url) as resp:
+                    self.poster_binary = await resp.read()
+            except aiohttp.client_exceptions.ClientConnectorError:
+                self.poster_binary = None
         else:
             self.poster_binary = None