
function _claimRewardsOn(
    uint256 _tokenId,
    address _to,
    IERC20[] memory _rewardTokens
) internal {
    uint256[] memory amounts = claimable(_tokenId);
    unchecked {
        uint256 len = _rewardTokens.length;
        for (uint256 i = 0; i < len; ) {
            uint256 claimableIndex = rewardTokenIndex[_rewardTokens[i]];
            uint256 amount = amounts[i];

            if (amount > 0) {
                // Math is safe: `amount` calculated safely in `claimable()`
                claimed[_tokenId][claimableIndex] += amount;
                rewardTokens[claimableIndex].safeTransfer(_to, amount);
            }
            ++i;
        }
    }
}
function _claimRewardsOn(
    uint256 _tokenId,
    address _to,
    IERC20[] memory _rewardTokens
) internal {
    uint256[] memory amounts = claimable(_tokenId);
    unchecked {
        uint256 len = _rewardTokens.length;
        for (uint256 i = 0; i < len; ) {
            // CHANGE HERE
            if (i != 0) {
                require(_rewardTokens[i] > _rewardTokens[i-1]);
            }

            uint256 claimableIndex = rewardTokenIndex[_rewardTokens[i]];
            uint256 amount = amounts[i];

            if (amount > 0) {
                // Math is safe: `amount` calculated safely in `claimable()`
                claimed[_tokenId][claimableIndex] += amount;
                rewardTokens[claimableIndex].safeTransfer(_to, amount);
            }
            ++i;
        }
    }
}
