Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 961a24410d96e2d375db1787a0986331e55a5a9a86d26c0910ec2f940bb29570:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^