Description

The following method is invalid when the current block equals the block at which Request was created

access(all) view fun canFullfill(): Bool {
  return !self.fulfilled && getCurrentBlock().height >= self.block
}

The above should be

access(all) view fun canFullfill(): Bool {
  return !self.fulfilled && getCurrentBlock().height > self.block
}

A consumer conditioning a call to Request._fulfill() on .canFulfill() == true would revert as ._fulfill() reverts when block < getCurrentBlock().height. This should be corrected and the contract updated on Testnet & Mainnet