    function migrateReward() external whenPaused {
        if (msg.sender != migratedTo) revert NotMigratedTo();
        if (gmxRewardRouterV2.pendingReceivers(address(this)) != address(0))
            revert PendingMigration();

        // Transfer out any remaining base reward (ie. WETH) to the new contract
        gmxBaseReward.safeTransfer(
            migratedTo,
            gmxBaseReward.balanceOf(address(this))
        );
+       pirexRewards ==address(0);   //*** set pirexRewards=0,Avoid claimRewards () being called by mistake.***//
    }
