Merge pull request #11688 from vegaprotocol/11687

fix: potential division by zero in notional reward metric evaluation …

Author: jeremyletang

CHANGELOG.md

@@ -62,7 +62,7 @@
 - [11665](https://github.com/vegaprotocol/vega/issues/11665) - Delay the final termination of a transfer to the following epoch.
 - [11679](https://github.com/vegaprotocol/vega/issues/11679) - Fix calculation of fees in party `stats`.
 - [11665](https://github.com/vegaprotocol/vega/issues/11665) - Delay the final termination of a transfer to the following epoch.
-
+- [11687](https://github.com/vegaprotocol/vega/issues/11687) - Fix potential division by zero in notional reward metric evaluation. 
 ## 0.78.1
 
 ### 🐛 Fixes

core/execution/common/market_activity_tracker.go

@@ -1329,7 +1329,7 @@ func calcNotionalAt(n *twNotional, t, tn int64, markPrice *num.Uint) *num.Uint {
 	}
 	p1 := num.UintZero().Mul(n.currentEpochTWNotional, tnOverTComp)
 	var notional *num.Uint
-	if markPrice != nil && !markPrice.IsZero() {
+	if markPrice != nil && !markPrice.IsZero() && !(n.price.IsZero() || n.notional.IsZero()) {
 		notional, _ = num.UintFromDecimal(n.notional.ToDecimal().Div(n.price.ToDecimal()).Mul(markPrice.ToDecimal()))
 	} else {
 		notional = n.notional