Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a512611d3e6fa32d9dab4637290e874f5893cf30df4f7475ecaebe1a8f90df62:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^