Problem: opBlockhash broke after sdk50

CHANGELOG.md

@@ -69,6 +69,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (rpc) [#516](https://github.com/crypto-org-chain/ethermint/pull/516) Avoid method eth_chainId crashed due to nil pointer on IsEIP155 check.
 * (cli) [#524](https://github.com/crypto-org-chain/ethermint/pull/524) Allow tx evm raw run for generate only when offline with evm-denom flag.
 * (rpc) [#527](https://github.com/crypto-org-chain/ethermint/pull/527) Fix balance consistency between trace-block and state machine.
+* (rpc) [#534](https://github.com/crypto-org-chain/ethermint/pull/534) Fix opBlockhash when no block header in abci request.
 * (rpc) [#536](https://github.com/crypto-org-chain/ethermint/pull/536) Fix validate basic after transaction conversion with raw field.
 * (cli) [#537](https://github.com/crypto-org-chain/ethermint/pull/537) Fix unsuppored sign mode SIGN_MODE_TEXTUAL for bank transfer.
 

app/upgrades.go

@@ -19,14 +19,28 @@
 	"context"
 
 	upgradetypes "cosmossdk.io/x/upgrade/types"
+	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/types/module"
+	evmtypes "github.com/evmos/ethermint/x/evm/types"
 )
 
 func (app *EthermintApp) RegisterUpgradeHandlers() {
 	planName := "sdk50"
 	app.UpgradeKeeper.SetUpgradeHandler(planName,
 		func(ctx context.Context, _ upgradetypes.Plan, fromVM module.VersionMap) (module.VersionMap, error) {
-			return app.ModuleManager.RunMigrations(ctx, app.Configurator(), fromVM)
+			m, err := app.ModuleManager.RunMigrations(ctx, app.configurator, fromVM)
+			if err != nil {
+				return m, err
+			}
+			sdkCtx := sdk.UnwrapSDKContext(ctx)
+			{
+				params := app.EvmKeeper.GetParams(sdkCtx)
+				params.HeaderHashNum = evmtypes.DefaultHeaderHashNum
+				if err := app.EvmKeeper.SetParams(sdkCtx, params); err != nil {
+					return m, err
+				}
+			}
+			return m, nil
 		},
 	)
 }