Gas estimation errored with the following message (see below). The transaction execution will likely fail

Question

When I try to excute the deposit function it shows Gas estimation errored with the following message (see below). The transaction execution will likely fail. Do you want to force sending? execution error: revert

{
    mapping (string => mapping(string => int)) gameResult;
    address player1;
    bool hasRight1; 

    address player2;
    bool hasRight2; 
    address public rec = 0x6F40147fE553b2Fb16A41C57CC87Ab72678d85C2;
    string public choice1;
    string public choice2;
    function deposit1(address reciver) public payable {
        require(msg.value == 5 ether);
        require(reciver == rec);
        reciver.transfer(msg.value);
        player1 = msg.sender; 
        hasRight1 = true;
     }
     function deposit2(address reciver) public payable {
        require(msg.value == 5 ether);
        require(reciver == rec);
        reciver.transfer(msg.value);
        player2 = msg.sender; 
        hasRight2 = true;
     }
    function rps() public
    {   // constructor
        gameResult["rock"]["rock"] = 0;
        gameResult["rock"]["paper"] = 2;
        gameResult["rock"]["scissors"] = 1;
        gameResult["paper"]["rock"] = 1;
        gameResult["paper"]["paper"] = 0;
        gameResult["paper"]["scissors"] = 2;
        gameResult["scissors"]["rock"] = 2;
        gameResult["scissors"]["paper"] = 1;
        gameResult["scissors"]["scissors"] = 0;
    }

    function play (string choice) public 
    {     
        if (msg.sender == player1&&hasRight1 == true)
            choice1 = choice;
        else if (msg.sender == player2 &&hasRight2 == true)
            choice2 = choice;

    }
    function sendReward()  public payable
    {
        if (bytes(choice1).length != 0 && bytes(choice2).length != 0)
        {

            int winner = gameResult[choice1][choice2];
            if (winner == 1)

                player1.transfer(10 ether);
            else if (winner == 2)
                player1.transfer(10 ether);
            else
            {
                player1.transfer(5 ether);
                player2.transfer(5 ether);

            }


        }
    }
}

Update: I followed a suggestion and deleted parameter in deposit 1 and 2 function. Now both deposit functions work. But when I click sendReward function it says Gas estimation errored with the following message (see below). The transaction execution will likely fail

pragma solidity ^ 0.4.13;
contract exercise3
{
    mapping (string => mapping(string => int)) gameResult;
    address player1;
    bool hasRight1; 

    address player2;
    bool hasRight2; 
    address public rec = 0x6F40147fE553b2Fb16A41C57CC87Ab72678d85C2;
    string public choice1;
    string public choice2;
    function deposit1() public payable {
        require(msg.value == 5 ether);
        rec.transfer(msg.value);
        player1 = msg.sender; 
        hasRight1 = true;
     }
     function deposit2() public payable {
        require(msg.value == 5 ether);
        rec.transfer(msg.value);
        player2 = msg.sender; 
        hasRight2 = true;
     }
    function rps() public
    {   // constructor
        gameResult["rock"]["rock"] = 0;
        gameResult["rock"]["paper"] = 2;
        gameResult["rock"]["scissors"] = 1;
        gameResult["paper"]["rock"] = 1;
        gameResult["paper"]["paper"] = 0;
        gameResult["paper"]["scissors"] = 2;
        gameResult["scissors"]["rock"] = 2;
        gameResult["scissors"]["paper"] = 1;
        gameResult["scissors"]["scissors"] = 0;
    }

    function play (string choice) public 
    {     
        if (msg.sender == player1&&hasRight1 == true)
            choice1 = choice;
        else if (msg.sender == player2 &&hasRight2 == true)
            choice2 = choice;

    }
    function sendReward()  public payable
    {
        if (bytes(choice1).length != 0 && bytes(choice2).length != 0)
        {

            int winner = gameResult[choice1][choice2];
            if (winner == 1)

                player1.transfer(10 ether);
            else if (winner == 2)
                player1.transfer(10 ether);
            else
            {
                player1.transfer(5 ether);
                player2.transfer(5 ether);

            }


        }
    }
}