First special treatment of space-rooms

src/Avatar.ts

@@ -165,6 +165,9 @@ export function avatarUrlForRoom(room: Room, width: number, height: number, resi
         return explicitRoomAvatar;
     }
 
+    // space rooms cannot be DMs so skip the rest
+    if (room.isSpaceRoom()) return null;
+
     let otherMember = null;
     const otherUserId = DMRoomMap.shared().getUserIdForRoomId(room.roomId);
     if (otherUserId) {