https://github.com/code-423n4/2022-06-nested/blob/b4a153c943d54755711a2f7b80cbbf3a5bb49d76/contracts/libraries/StakingLPVaultHelpers.sol
poolCoinAmount must be 2, 3, 4. so, if it not fall in this range it should be reverted but now it doesnt. On every functions in this file add:
