Submitted by 0x52
Staking is unable to be paused as intended.
StakingRewards.sol inherits pausable and implements the whenNotPaused modifier on stake, but doesnt implement any method to actually pause or unpause the contract. Pausable.sol only implements internal functions, which requires external or public functions to be implemented to wrap them. Since nothing like this has been implemented, the entire pausing system is rendered useless and staking cannot be paused as is intended.
Create simple external pause and unpause functions that can be called by owner.
MiguelBits (Y2K Finance) disputed 
HickupHH3 (judge) commented:
