Division by zero could cause DOS in function harvest() and claim() in PirexRewards contract

Lines of code Vulnerability details Impact When functions harvest or claim of PirexRewards are called, they will claim rewards by calling PirexGmx.claimRewards function. If there is any case that esGmx reward is existed but not base rewards or vice versa, the value returned from calculateRewards ...

platform should be approved again after it's changed by the admin.

Lines of code Vulnerability details Impact In AutoPxGmx.sol and AudotPxGlp.sol, it doesn't approve properly when platform is changed. As a result, PirexGmx contract can't transfer gmx or gmxBaseReward from these contracts and the main logic won't work as expected. Proof of Concept As we can see...