Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e985a829ec1fac64ef1978c553f00a114b01df208a57c09f55a8820eb6d260e3:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^