Submitted by wuwe1, also found by WatchPug
ConvexStakingWrapper.sol#L94-L99
convexPool[_pid] is set to IRewardStaking(convexBooster).poolInfo(_pid).crvRewards;
crvRewards is a BaseRewardPool like this one: https://etherscan.io/address/0x8B55351ea358e5Eda371575B031ee24F462d503e#code.
BaseRewardPool does not implement poolInfo
ConvexStakingWrapper.sol#L238
Above line calls poolInfo of  crvRewards which causes revert.
According to Boosters code
https://etherscan.io/address/0xF403C135812408BFbE8713b5A23a04b3D48AAE31#code
convexBooster requires poolInfo[_pid].lptoken.
change L238 to
leekt (Concur) confirmed
Alex the Entreprenerd (judge) commented:
