Update api_usage.py

api_usage.py

@@ -125,7 +125,7 @@ def send_oai_completions(oai_stuff):
         result = r.json()
         if "error" in result:
             e = result.get("error", {}).get("code", "")
-            if e == None:
+            if e == None or e == 'missing_required_parameter':
                 rpm_num = int(r.headers.get("x-ratelimit-limit-requests", 0))
                 tpm_num = int(r.headers.get('x-ratelimit-limit-tokens', 0))
                 tpm_left = int(r.headers.get('x-ratelimit-remaining-tokens', 0))