fix: Return nil if negative time elapsed from last block happens (#1018)

* fix: return nil if the current time < privous interest time

* add 1018 to changelog

* add todo to fix when tendermint solves #8773

CHANGELOG.md

@@ -61,6 +61,10 @@ Ref: https://keepachangelog.com/en/1.0.0/
 - [987](https://github.com/umee-network/umee/pull/987) Streamline x/leverage CLI tests
 - [1012](https://github.com/umee-network/umee/pull/1012) Improve negative time elapsed error message
 
+### Bug Fixes
+
+- [1018](https://github.com/umee-network/umee/pull/1018) Return nil if negative time elapsed from the last block happens.
+
 ## [v2.0.2](https://github.com/umee-network/umee/releases/tag/v2.0.2) - 2022-05-13
 
 ### Features

x/leverage/keeper/interest.go

@@ -73,7 +73,15 @@ func (k Keeper) AccrueAllInterest(ctx sdk.Context) error {
 
 	// calculate time elapsed since last interest accrual (measured in years for APR math)
 	if currentTime < prevInterestTime {
-		return types.ErrNegativeTimeElapsed.Wrap(fmt.Sprintf("current: %d, prev: %d", currentTime, prevInterestTime))
+		// @todo fix this when tendermint solves #8773
+		// https://github.com/tendermint/tendermint/issues/8773
+		k.Logger(ctx).With("AccrueAllInterest will wait for block time > prevInterestTime").Error(
+			types.ErrNegativeTimeElapsed.Error(),
+			"current", currentTime,
+			"prev", prevInterestTime,
+		)
+
+		return nil
 	}
 	yearsElapsed := sdk.NewDec(currentTime - prevInterestTime).QuoInt64(types.SecondsPerYear)