Function mintRewards() in RAACMinter contract can only be called by StabilityPool i.e.
mintRewards()
However, StabilityPool, has no functions which call into mintRewards() for minting rewards to specific users.
This makes this function completely obsolete and unnecessary.
Manual
Either implement a dedicated function in stability pool to call mint rewards, or consider removing it from the contract.
The contest is live. Earn rewards by submitting a finding.
This is your time to appeal against judgements on your submissions.
Appeals are being carefully reviewed by our judges.