Lines of code
<https://github.com/rabbitholegg/quest-protocol/blob/8c4c1f71221570b14a0479c216583342bd652d8d/contracts/Quest.sol#L17-L18&gt;
<https://github.com/rabbitholegg/quest-protocol/blob/8c4c1f71221570b14a0479c216583342bd652d8d/contracts/Quest.sol#L13&gt;

Vulnerability details

Impact

 It is very important to check whether the immutable variables are not equal to the default values because if  Quest is created and when we pass a 
 default value to a variable then it can't be changed and it can lead to a problem.

Proof of Concept

  Suppose while creating quests we have passed the total participants equal to 0 then  creating this quest is actually wasted because no one can mint 
  an NFT and claim the reward and also with the rewardAmountInWeiOrTokenId if it passed 0 even if they are claimers then the rewards will be 0 only.

Tools Used

  Pen and Paper    

Recommended Mitigation Steps

  Always have the immutable variables check whether they are not equal to their default value.

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