Finding description and impact

Here in _handleTrasfer fucntion, referreal fee cost is being calculated, with respesct to total buyer fee amount. but main issue is referral fee cost is directly used in event emit, instead only referral fee reward should be emmitted not cost

Proof of Concept

lets consider a scenario

buyer fee amount is 50 and fee referall is 10%. now here 50-5 means 45 comes as referal cost and it is being emitted. and emmitted one is , which is to be gieven reward

 * @param referralReward Amount of reward paid to referrer

Recommended mitigation steps

proper emit of variable and calculation of referral fee shoudl be done