Update botmodels: anomaly detection fix

src/api/v1/endpoints/anomaly.py

@@ -30,7 +30,14 @@ async def detect_anomalies(
 
     service = get_anomaly_service()
 
-    values = [float(r.get(request.value_field, 0)) for r in request.data]
+    values = []
+    for r in request.data:
+        val = r.get(request.value_field)
+        if val is not None:
+            try:
+                values.append(float(val))
+            except (TypeError, ValueError):
+                pass
 
     if not values:
         return {