Fix 500 error

ranked/api/views.py

@@ -4,6 +4,7 @@
 from rest_framework.response import Response
 from rest_framework.request import Request
 from rest_framework.decorators import api_view
+import math
 from SRCweb.settings import API_KEY
 from discordoauth2.models import User
 from .lib import revert_player_elos, update_player_elos, validate_patch_match_req_body, validate_post_match_req_body, get_match_player_info