Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> cc923fc30e14591ac04786d5f430ae62dc24d32dafe58079d578a92a84859e43:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^